Patek Philippe & Cie., Genève, No. 124521, case No. 232524, made for Spaul-ding & Co, Paris, circa 1903. Very fine 18K gold keyless minute-repeating watch with split-seconds chronograph and 30-mi-nute register.

Patek Philippe & Cie., Genève, No. 161220, case No. 280134, made for The Sweeney Jewelry Co., Houston, Texas, circa 1912. Very fine 18K gold keyless pocket chrono-meter with 36-hour power reserve indi-cator, awarded the third prize at the Geneva Astronomical Observatory timing contest 1912-1913.

Patek Philippe & Cie., Genève, Mon-tre de Torpilleur No. 193445, case No. 625963, Ref. 738, made in 1931, sold on April 18,1942. Exceptionally fine and rare silver, key-less, Extra adjusted pocket chronometer, awarded Second Prize at the 1931 Geneva Observatory Timing Contest. Accompanied by Extract from the Archives, Observatory of Geneva certificate and copies of the Bulletin de Marche.

Jules Jürgensen, Copenhagen, made in Switzerland, No. 15172, circa 1895. Very fine and rare 18K gold hunting-cased keyless minute-repeating watch with split-seconds chronograph and 60-minute register.

Eduard JeanRichard, Le Locle, made for Paul Ditisheim, Chaux-de-Fonds, No. 3395/9231/11948, circa 1910, with British import marks for 1911-12. Very fine and very rare 18K gold hunting-cased keyless minute-repeating carillon watch with Westminster chimes.

Harbor Scene Louis-Elysée Piguet, No. 5310 2877 47766, enamel attributed to P.-Amédée Champod, made for the Chinese market, circa 1890. 18K rose gold and enamel double-train, grande sonnerie clock watch with minute-repeating mechanism and center seconds.

James C(asar) Pellaton, Dr. H.C., Le Locle, No. 1944, made specially for Georges Perrenoud in 1941. Very fine and very rare 18K gold, keyless one-minute tourbillon regulator in mahogany gimbaled box.

West Meets East Unsigned, Neuchâtel, Swiss, made on special order, circa 1870. Very fine and rare 18K gold and enamel diamond-set, hunting-cased, keyless minute-repeating watch.

Audemars Piguet, Genève, No. 46931. Pro-duced in 1943. Extremely fine and rare astronomic, 18K yellow gold gentleman's wristwatch with olive-shaped button chronograph, register, tachometer, triple date and moon phases. Accompanied by an 18K yellow gold Audemars Piguet buckle.

Lot of 13 documents, including: - A 13-page list of the complete World Time production of Louis Cottier, for Patek Philippe, Rolex, Vacheron & Constantin, and other important firms. - A list of the books in L. Cottier's personal library. - Manuscript documents by L. Cottier, concerning Genevan horology, including: 10 pages on caricature in horology; 32-page lecture on painters and Genevan horology; 13 pages on enameling and horology; important original drawings of clock and watch hands.

Lot comprising: Important illustrated correspondence between L. Cottier and Hans Wilsdorf, founder of Rolex, concerning World Time projects among other things; illustrated project by L. Cottier for Rolex concerning means of adjus- ting waterproof watches without opening them among other things; project by L. Cottier for Rolex concerning improvement of Date- Just system.

Louis Cottier, Genève, No. 6, case No. 211933. Sold on December 12, 1932. Extremely rare and very fine 18K gold, key-less World Time dress watch with original in-voice and original photo.

Rolex, Genève, World Time, No. 3917, case No. 579555, Ref. 4262 (Heures Universelles), made in 1947. Very fine and extremely rare 18K pink gold key-less dress watch.

Agassiz, Swiss, World Time, No. 4554021, circa 1945. Very fine and rare 14K gold keyless dress watch.

Patek Philippe & Cie, Genève, World Time, No. 823542, case No. 618277, Ref. 542. Made in 1938, sold on November 25, 1938. Only two examples of this reference were made in 1937. Extremely rare and very fine early 18K yellow gold gentleman's wristwatch, the smallest Patek Philippe World Time wristwatch in the world.

The First World Time Wristwatch with Two Crowns Louis Cottier, Carouge, patent No. 270085. Dated 1950. Very fine and unique, 24-hour World Time, 18K yellow gold gentleman's wristwatch with two crowns, Louis Cottier's personal watch.

Patek Philippe & Cie, Genève, No 720304, case No 306201, Ref. 2523 HU (Heures Universelles). Production of this reference started in 1953. Extremely fine and rare, 18K yellow gold, World Time gentleman's wristwatch with two crowns and poly-chrome cloisonné enamel dial representing the map of Europe and Asia and with 18K yellow gold Patek Philippe buckle.

Patek Philippe & Cie, Genève, Calatrava, No. 727 309, case No. 309776, Ref. 2597 HS (Heures Sautantes). Production of this reference started in 1958. Extremely fine and very rare, two time-zone, 18K yellow gold gentleman's wristwatch with three hands. The prototype of this reference was made by Louis Cottier in 1957.

Patek Philippe & Cie, Genève, Calatrava, No. 711875, case No. 320081, Ref. 570, circa 1965. Very fine and rare, large, center-seconds, 18K white gold gentleman's wristwatch with an 18K white gold Patek Philippe buckle.

Patek Philippe & Cie, Genève, No. 1111364, case No. 2614492, Ref. 3428. Production of this reference started in 1960. Very fine and rare, water-resistant, self-winding, 18K yellow gold gentleman's wristwatch.

Patek Philippe & Cie, Genève, No. 761518, case No. 687558, Ref. 2526. Production of this reference started in 1953. Very fine and extremely rare, water-resistant, self-winding, platinum and diamond gentleman's wristwatch with an 18K white gold Patek Philippe buckle.

Non-Magnetic Watch Co, Geneva, movement by the Association Ouvrière, probably made for the Columbian Exposition in Chicago in 1893, bought by Dobson & Son, 200 Piccadilly, London, W. Extremely rare, very fine 18K gold hunting cased keyless one minute tourbillon regulator with chronometer escapement.

Watch with 3 Complications Unsigned, Swiss, circa 1890. Very fine and rare 18K gold hunting-cased keyless double-train Grande et Petite Sonnerie clockwatch with minute-repeating.

Chronometer with 7 Complications Ulysse Nardin, Locle, Suisse, No. 17205, circa 1925. Unique and very fine 18K gold hunting-cased keyless astronomical minute-repeating pocket chronometer with perpetual calendar, phases of the moon, chronograph and 30-minute instantaneous register in original fitted leather box, accompanied by original certificate and the company's Bulletin de Marche dated March 1927.

Rolex Oyster Chronograph, Antimagnétic, Ref. 6034. Produced in the 1950's - 60's. Very fine, tonneau-shaped, water-resistant, stainless steel gentleman's wristwatch with round button chronograph, registers, tachometer and telemeter. Accom-panied by a stainless steel Oyster bracelet.

Rolex Chronograph Ref. 6238. Production of this reference started in the 1960's. Fine tonneau-shaped, water-resistant, stain-less steel gentleman's wristwatch with round button chrono-graph, registers and tachometer. Accompanied by a stainless steel Oyster bracelet.

Rolex Oyster Chronograph, Antimagnetic, Ref. 6036, so-called Jean-Claude Killy. Produced circa 1952. Very fine and rare, tonneau-shaped, water-resistant, stainless steel gentleman's wristwatch with round button chronograph, registers and triple date. Accompanied by a stainless steel Oyster bracelet.

Rolex Oyster Perpetual Day Date, Superlative Chronometer Officially Certified, Ref. 6611. Made in six examples, circa 1959. Very fine and extremely rare tonneau-shaped, center-seconds, self-winding, water-resistant, stainless steel gentleman's wristwatch with day and date and a stainless steel Oyster bracelet.

Rolex Cosmograph, Ref. 6239, with pulsometer dial and steel bezel. Produced in the 1970's. Extremely fine and probably unique, water-resistant, stain-less steel, gentleman's wristwatch with round button chronograph, registers and tachometer, with a stainless steel Oyster bracelet.

Rolex Oyster Deep Sea Special, No. 35., movement No. 641867. Produced in a limited edition following the Jacques Piccard expedition in 1960. This watch is dated January 23, 1960. Extremely rare and important, highly waterproof down to 10908 m/35789 ft, able to resist pressures of one ton per square centimeter, center-seconds, stainless steel and yellow gold diver's wristwatch with a stainless steel and yellow gold riveted Oyster bracelet.

Doves and Flowers Bovet, Fleurier, No. 861, circa 1845, made for the Oriental market. Very rare and fine true pair of 18K gold and painted on enamel center-seconds, pearl-set watches with special escapements, in original Morocco fitted box.

William Anthony, London, No. 1935, made for the Chinese market, circa 1800. Magnificent and extremely rare 18K gold and enamel, eight day-going, pearl- and diamond-set oval watch with special escapement.

Geneva, attributable to Frères Rochat, made for the Chinese market, circa 1820. Extremely rare and magnificent pair of gold and enamel pearl- and diamond-set singing bird pistols.

La leçon de chant Frères Rochat, Geneva, No. 120, made for the Chinese market, circa 1815. Exceptional and unique large rectangular 18K gold and enamel pearl- and diamond-set large singing bird box featuring two birds with rare forward movement of the head and body.

Seaside Village Scene France, Musique de Genève à 6 airs, No. 33472, the painting stamped Deforge, Boulevard Montparnasse, Md. Couleurs A Paris, circa 1860. Very fine and rare eight day-going hour- and half hour-striking musical painting with clock, with echo activated at 12 o'clock, music playing on demand.

The Musical Scent Flask Jaquet Droz, London, casemaker's mark M&P, Geneva, made for the Chinese market, circa 1790. Exceptionally rare and very fine gold and enamel, emerald- and half pearl-set musical scent flask fitted with a watch with visible diamond-set balance, a carillon, and a mirrored compartment .

Pierre Jaquet Droz, A la Chaux-de-Fonds, circa 1770. Extremely fine and rare, red tortoiseshell veneered and ormolu eight day-going, hour and half-hour striking and hour-repeating musical bracket clock with eight tunes playing on the hour or on demand.

Mercury Swiss, attributable to Meuron, made for the Italian Market, circa 1790. Very rare and very fine ebonized and gilt wood eight-day-going, bracket clock, striking hours and quarters, repeating with 12-tune music playing on the hour and on demand.

Brosse à Bordeaux (France), circa 1840. Very rare, highly unusual, fine gilt brass and marble table regulator with escapement à coup perdu, overhanging pendulum and highly unusual power system.

The Lyre Brosse à Bordeaux (France), circa 1840. Extremely rare, highly unusual and very fine 9-day going brass and marble table regulator with unusual constant force escapement à coup perdu, friction roller bearings, power reserve indication, overhanging pendulum and thermometer.

Brosse à Bordeaux (France), No 24, circa 1830. Very fine and unusual 2-day marine chrono-meter of special construction.

Lépine A Paris, Horloger du Roy, No. 1242, with hallmark used between July 14, 1767 and July 13, 1768. Very fine, rare and important 20K multicolored gold quarter-repeating à toc watch of a new design invented by Lépine.

Moss Agate Flasks James Cox, London, No. 631 & 632, circa 1770, made for the Chinese market. Exceptionally rare and very fine pair of moss agate and 20K gold diamond-set scent flask fitted with clockwatches striking the hours and mirrored compartments.

A. Lange & Söhne, Glasshütte, B/ Dresden, No. 48010, circa 1900. Very fine and rare silver keyless free-sprung deck chronometer beating half-seconds with special escapement.

International Watch Co., Schaffhausen, Grande Complication, No. 10/50, Ref. 3770. Produced in a limited edition of 50 examples in 1995. Very fine and extremely rare, oversized, astronomic, minute-repeating, self-winding, platinum gentleman's wristwatch with 44 hours autonomy, square button chronograph, registers, perpetual calendar and moon phases and a platinum IWC buckle. Accompanied by original box and certificate.

Cartier, France, Bracelet Montre Tortue Or, No. 22302, movement No. 40736. Entered in the registers on April 24, 1929, sold in 1931. Exceptional and unique Art Deco, minute repeating, 18K yellow gold gentleman's wristwatch.

Julien Le Roy à Paris, No. 2934, circa 1750. Very fine, important and rare, small silver Grande Sonnerie quarter-repeating coach watch with alarm.

The First French Wearable Precision Timekeeper Inventée et construite par Ferdinand Berthoud, Exécuite par Louis Berthoud, production started 1765, finished 1785 and sold in 1787 to His Royal Highness The Prince of Asturias, future King of Spain Charles IV. Extremely important, unique, exceptionally fine, the first French wearable Longitude Timekeeper (Montre de poche à Longitude), the first French watch with spring detent escapement, gridiron temperature compensation and regulator dial, accompanied by gilt brass stand.

Louis Berthoud, No. 24-2421, ordered by the King Louis XVI, production started in 1789, sold to Monsieur Ravel on 26 Prairial (14 June 1795) for 4000 Livres. Unique and equally fine very important 18K gold, double-face quarter-repeating, à toc, free-sprung Montre Marine with independent equation of time of special design and annual calendar.

The First Deck Watch in the World Pierre Le Roy, Paris, made in 1774, made for the Duke de Penthièvre, restored by Henri Laresche in 1806. Exceptionally rare, extremely important and very fine gold and silver, double-dial, center-seconds, special escapement watch with special temperature compensation for the use of Astronomers and Seamen.

Louis Berthoud, Paris, No. 2370, sold to Prince Karol Radziwill for 100 Louis (2400 livres), hallmarked 1789. Very fine, rare and important 18K gold early chronometer Montre secondes Garde Temps.

Dumas, Elève du Gouvernement, No. 21, circa 1840. Very fine and extremely rare silver and gold pocket chronometer made under the direction of Henri Motel, with original ratchet key.

Ch. H. Grosclaude & Co., Fleurier, circa 1870. Fine 18K gold hunting-cased double-train independent dead seconds, quarter-seconds diablotine watch with 12-hour register and thermometer.

Charles Henri Grosclaude & Fils, Fleurier, Suisse, No.3944/26177, circa 1865. Very fine and rare 18K gold and enamel keyless minute tourbillion regulator watch with reversed fusee and special patented winding and setting mechanism.

Patek Philippe & Cie, Genève, Reverso, No. 823421, case No. 609481, retailed by Gübelin Lu-cerne. Produced in 1930, sold on June 29, 1932. Extremely fine and rare, rectangular, rever-sible, 18K white gold gentleman's wristwatch.

Vacheron & Constantin, Genève, No. 410236, case by Verger Freres No. 12407, re-tailed by Van Cleef & Arpels, Paris, circa 1930. Very fine and rare 18K gold, silver, azure lacquer, lapis lazuli and black onyx desk clock in shape of an Oriental scent bottle with rotating ring hour display.

Vacheron & Constantin, Genève, No. 3865 83, case No. 93 59 by Verger frères, Paris. delivered on December 9, 1925, retailed by Lacloche frères, Paris. Extremely fine 18K gold and enamel, diamond-set, onyz, amber and emeral Art Deco 8 day going clock with mother of pearl dial, in original fitted box.

Patek Philippe & Cie, Genève, No. 860025, case No. 613275, Ref. 130, made in 1936, sold on March 3rd, 1937. Production of this reference started in 1934. Extremely rare and very important 18K yellow gold gentleman's wristwatch with single button chronograph on the crown, register and tachometer. Accompanied by an 18K yellow gold Patek Philippe buckle and the Extrait des Registres.

Patek Philippe & Cie, Genève, No. 888018, case No. 674391, Ref. 2497, first series. Production of this reference started in 1951. Very fine and rare center-seconds, astronomic, 18K pink gold gentleman's wristwatch with perpetual calendar and moon phases with an 18K pink gold Patek Philippe buckle.

Patek Philippe & Cie, Genève, No. 888001, case No. 674366, Ref. 2497, second example of the first series. Production of this reference started in 1951. Very fine and extremely rare center-seconds, astronomic, 18K yellow gold gentleman's wristwatch with perpetual calendar and moon phases with an 18K yellow gold Patek Philippe buckle.

Watch with 6 Complications Hri. Grandjean & Cie, (Le Locle), Swiss, No. 37419, made for C. Marcks & Co., Bombay and Poona, circa 1890. Very fine 18K gold keyless astronomical minute-repeating hunting-cased watch with perpetual calendar, and phases of the moon, made for the Indian Market.

Swiss, No. 5114, made for Bigelow, Kennard & Co., Boston, circa 1890. Very fine 18K gold keyless astronomical minute-repeating watch with perpetual calen-dar, phases of the moon, split-seconds chrono-graph and 60-minute register.

Patek Philippe & Cie, Genève, No. 864470, case No. 635565, movement No. 864470, Ref. 1591. Made in 1944, delivered on November 27, 1944, to Favre Leuba & Co. Unique and extremely important astronomical, water-resistant, indirect center seconds, stainless steel gentleman's wristwatch with perpetual calendar and moon phases. Accompanied by the Extract from the Archives.

Patek Philippe & Cie, Genève, No. 771612, case No. 2866720, Ref. 3940. Production of this reference started in 1985, sold on July 25, 1989. Very fine, astronomic, self-winding, 18K yellow gold gentle-man's wristwatch with perpetual calendar and moon phases, 18K yellow gold Patek Philippe buckle. Accompanied by a mahogany wooden fitted box, a black and yellow gold push-piece for quick change of the date and certificate.

Patek Philippe & Cie, Genève, No. 3046076, case No. 4010724, Ref. 3970/E. Production of this reference started in 1986, sold on July 11, 2000. Very fine astronomic, 18K yellow gold gentleman's wrist-watch with round button chronograph, register, perpetual calendar and moon phases, an additional 18K yellow gold back, a yellow gold and black push-pin and an 18K yellow gold Patek Philippe deployant clasp. Accompanied by a maho-gany fitted box and certificate.

Patek Philippe & Cie, Genève No. 1958011, case No. 2980930, Ref. 5050J-018. Produced in the 1990's, sold on May 19, 2000. Very fine, astronomic, center-seconds, self-winding, 18K yellow gold gentleman's wristwatch, with perpetual calendar, retrograde date display, leap year and phases of the moon, leather strap and 18K yellow gold Patek Philippe buckle. With electrically driven leather-covered fitted wooden box for winding the watch. Accompanied by certificate.

Patek Philippe & Cie, Genève, No. 1958924, case No. 4138715, Ref. 5059P-001. Produced and sold in 2000. Very fine, massive, astronomic, center-seconds, self-winding, water-resistant, platinum gentleman's wristwatch with perpetual calendar, moon phases, retrograde date, 48 hours autonomy, a platinum Patek Philippe deployant clasp and black and platinum push-piece. With electrically driven leather-covered fitted wooden box for winding the watch. Accompanied by certificate.

Patek Philippe & Cie, Genève, No. 3235216, case No. 4171744, Ref. 5150G T-150 pro-duced in a limited edition of 150 examples in 2001, to commemorate the 150th anni-versary of the relationship between Patek Philippe and Tif-fany & Co. All examples have been sold. Very fine and rare, astronomic, center-seconds, self-winding 18K white gold gentleman's wristwatch with semi-instan-taneous digital triple date annual calendar with indication of the weeks for one year, moon phases and 48-hour autonomy, with an 18K white gold Patek Philippe buckle. Accompanied by a mahogany fitted box and certificate.

Rolex Anti-Magnetic, Ref. 3055. Produced in the 1950's. Fine and rare 18K yellow gold mid-sized wristwatch, with square-shaped button chronograph, regis-ters, tachometer and a gold-plated Rolex buckle.

Rolex Oyster Perpetual Explorer, Superlative Chronometer Officially Certified, Ref. 1016, retailed by Cartier. Production of this reference started in the 1960's. Fine and very rare tonneau-shaped, center-seconds, self-win-ding, water-resistant, stainless steel gentleman's wristwatch with a stainless steel Jubilé bracelet.

Rolex Oyster Perpetual Milgauss, Superlative Chronometer, Officially Certified, Ref. 1019. Production of this reference started in 1966. Fine, water-resistant to 50 m., center-seconds, self-winding, stainless steel gentleman's wristwatch with a stainless steel Oyster bracelet. Accompanied by original certificate.

Rolex Oyster Cosmograph, Ref. 6239, so-called Paul Newman, with steel bezel protected by a transparent ring. Produced in the 1970's. Very fine and rare water-resistant, stainless steel gentleman's wristwatch with round button chronograph, registers and tachometer, with stainless steel Oyster bracelet.

Rolex Cosmograph Daytona, Ref. 6239, with black anti-reflets bezel. Produced in the 1960's. Very fine, water-resistant, 18K yellow gold gentleman's wristwatch with round button chronograph, registers and tachometer, with 18K yellow gold Oyster bracelet.

Rolex Oyster Cosmograph Daytona, Ref. 6263/6265, with steel bezel. Production of this reference started in 1971. Fine water-resistant, stainless steel gentleman's wristwatch with round button chronograph, registers and tachometer. Accompanied by a stainless steel Oyster bracelet.

Rolex Oyster Cosmograph Daytona, Ref. 6263, with black anti-reflets bezel. Production of this reference started in 1971, sold on December 23, 1984. Fine water-resistant, stainless steel gentleman's wristwatch with round button chronograph, registers and tachometer. Accompanied by a stainless steel Oyster bracelet, fitted box and certificate.

Rolex Oyster, Superlative Chronometer Offi-cially Certified Cosmograph, Ref. 6263/6265, with black anti-reflets bezel. Produced in the 1970's. Very fine and rare, water-resistant, 14K yellow gold gentle-man's wristwatch with round button chronograph, registers and tachometer. Accompanied by a gold-plated Rolex buckle.

Rolex Oyster Cosmograph Daytona , Ref. 6263/6265, with black anti-reflets bezel. Production of this reference started in 1971. Fine water-resistant, stainless steel gentleman's wristwatch with round button chronograph, registers and tachometer, with a stainless steel Oyster bracelet. Accompanied by a box and certificate.

Patek Philippe & Cie, Genève, No. 921373, case No. 626625, Ref. 1526, 1st series. Production of this watch and of the reference started in 1941. Extremely fine and probably unique, astronomic, 18K yellow gold gentleman's wristwatch with perpetual calendar and moon phases, special dial, and by an 18K yellow gold Patek Philippe buckle. Accompanied by the Extract from the Archives and by a Patek Philippe letter of explanation.

Patek Philippe & Cie, Genève, No. 966945, case No. 665500, Ref. 1526, 2nd series. Production of this reference started in 1941. Extremely fine and rare, astronomic, 18K pink gold gentleman's wristwatch with perpetual calendar and moon phases, with an 18K pink gold Patek Philippe buckle.

Patek Philippe & Cie, Genève, No. 928698, case No. 646254, Ref. 1526, 2nd series. Production of this reference started in 1941. Extremely fine and rare, astronomic, 18K yellow gold gentleman's wristwatch with perpetual calendar and moon phases, with an 18K yellow gold Patek Philippe buckle.

Patek Philippe & Cie, Genève, No. 1119358, case No. 331514, Ref. 3448. Made in 1974, sold on May 2, 1978. Pro-duction of this reference started in 1962. Very fine and rare, astronomic, self-winding, 18K yellow gold gentleman's wristwatch with perpetual calendar and moon phases, and an 18K yellow gold Patek Philippe buckle. Accompanied by original fitted box and Extract from the Archives.

Patek Philippe & Cie, Genève, No. 1119688, case No. 2805696, Ref. 3450 Q, second series. Production of this reference started in 1981. Very fine and rare astronomic, self-winding, 18K yellow gold gentleman's wrist-watch with perpetual calendar, moon phases, and the leap year marked in Roman numerals, with an 18K yellow gold Patek Philippe buckle. Accompanied by the Extract from the Archives.

Girard-Perregaux, No. 133336, carriage by Ernest Guinand, circa 1890. Exceptionally fine, 18K gold, hunting-cased, keyless gold three bridge patented movement, the smallest one-minute tourbillon at the time, and the smallest one-minute tourbillon with pivoted detent escapement ever made.

Charles Frodsham, Ad. Fmsz, by Appointment to the King, No. 115 New Bond Street, late of 84 Strand, London, No. 09190/12127, movement by Nicole Nielsen, case by Harrison Mill Frodsham, hallmarked 1906-1907. Exceptionally fine and rare 18K gold, keyless free-sprung six-minute tourbillon regulator, Class A Kew Observatory certificate of 1906.

Czapek et Cie a Genève, No. 3158, enamel attributed to Charles-Louis Glardon, given by the Khedive Ismail Pasha to Charles-Edmond Chojecki, Commissaire Général of the Egyptian Pavilion at the Paris Universal Exhibition, in 1867. Very fine and important 18K gold hunting-cased keyless pocket watch with miniature enamel portrait and with Jean Adrien Philippe's winding/setting mechanism.

Patek, Philippe & Cie, Genève, No. 47014, case No. 47014, made in 1870, sold to Mr. E. Bonneault on July 14, 1880. Very fine and rare 18K gold, double-train, independent dead seconds, keyless watch, accompanied by Patek, Philippe Certificate.

Breguet, No. 3213, circa 1910. Fine, silver, keyless split second chrono-graph dress watch with 60-minute register entered for the Observatory of Besançon Timing Contest.

Breguet, Ref. 343, made on June 3, 1948 and sold on January 3, 1952 to La Mai-son Burma. Unique stainless steel military wristwatch with coaxial button chronograph on the winding-crown. Accompanied by Breguet certificate.

Miniature Médaillon Breguet, No. 2053, Médaillon, sold to Monsieur Aufresne on August 25, 1807 for 1320 Francs. Fine and rare 20K gold, small pendant montre de souscription, accompanied by original ratchet key and a certificate issued by Breguet on April 11, 1857.

Breguet, No. 2910, sent to Wenham on 12 June 1816, for 1300 Francs. Fine, small 20K gold watch with regulator type dial, accompanied by Breguet Certificate.

Breguet, No. 960, sent to Betancourt on 10 Vendemiaire year 11 (2 October 1802), for 1600 Francs. Fine and rare, large 20K gold Souscription à tact.

Breguet, No. 2044, sold to Monsieur Castaneda on January 14, 1807 for 3240 Francs. Extremely rare and equally fine 20K gold double-train quarter-repeating Grande Sonnerie clockwatch. Accompanied by a Breguet certificate.

J. Baillon, Paris, No. 3038, circa 1775. Very fine and rare 18K gold and enamel ring watch, entirely diamond-set, in original lizard fitted box.

Unsigned, attributed to Pierre Simon Gounouilhou, Geneva, circa 1820. Very fine and extremely rare, 18K gold, diamond-set quarter-hour repeating ring watch with special escape-ment and visible diamond-set balance.

Attributable to Piguet & Capt, circa 1810. Very fine and rare 18K gold and enamel, pearl-set lyre-shaped musical automaton.

The Harp Unsigned, Geneva, circa 1805. Very fine and rare 18K gold and enamel pearl-set musical harp fitted with a watch.

Henry Capt, Genève, No. 6710 and No.6711, circa 1820. Exceptionally rare and very fine pair of 18K gold musical automaton watches playing on every hour or on demand, made for the Chinese market.

Patek Philippe & Cie, Genève, No. 862749, case No. 2621608, Ref. 1579. Production of this reference started in 1943. Very fine and rare, large, 18K yellow gold gentleman's wrist-watch with square button chronograph, register and tacho-meter with an 18K yellow gold Patek Philippe buckle. Accompanied by the Extract from the Archives.

Patek Philippe & Cie, Genève, No. 867900, case No. 663404, Ref. 2499, first series. Production of this reference started in 1951. Very fine and very rare astronomic, 18K yellow gold gentle-man's wristwatch with square button chronograph, 30-minute register, tachomter, perpetual calendar and moon phases, with 18K yellow gold Patek Philippe buckle.

Patek Philippe & Cie, Genève, No. 868176, case No. 667650, Ref. 130, made in 1951, sold on June 4, 1952. Production of this reference started in 1934. Very fine, 18K yellow gold gentleman's wristwatch with square button chronograph, register and tachometer. Accompanied by the Extrait des Registres.

Breguet, No. 1188, sold to Don Anto-nio of Spain on August 1, 1808 for 3600 Francs. Exceptionally fine and extremely rare 18K gold Garde Temps four minute free-sprung tourbillon regulator with 36-hour power reserve indicator, subsidiary seconds and stop seconds, escapement naturel with fast train, and Turkish dial, in its Morocco fitted box, accompanied by 1927 Certificate.

The Forge of Love Unsigned, Geneva, made for the Chinese Market, circa 1810. Very fine and rare 18K gold and ena-mel, split pearl-set automaton watch.

The Dutch Kitchen Attributed to Pierre Simon Gou-nouilhou, Geneva, No. 8030, circa 1815. Very rare and equally fine 18K gold and enamel double-face watch with an automaton scene.

The Shield Piguet et Capt a Genéve, No. 111, circa 1810. Very fine and rare 18K gold and enamel, half pearl- and diamond-set fob watch with visible spinning balance.

The Shield Unsigned, attributable to Piguet et Capt, Geneva, circa 1810. Extremely fine and rare 18K gold and painted on enamel, half pearl- and diamond-set pendant watch with visible spinning balance.

The Butterfly Piguet et Meylan, Geneva, No. 1185, case by GR, made for the Chinese Market circa 1815. Very fine and very rare 18K gold and enamel, musical box in a shape of a butterfly fitted with a watch.

The Butterfly Piguet et Meylan, Geneva, No. 3459, circa 1820, made for the Chinese Market. Exceptionally fine and very rare 18K gold and enamel, diamond, emerald and half pearl-set musical automaton box in a shape of a butterfly fitted, with a watch, in a fitted wooden box.

The Barking Dog J.D. Piguet & P. Meylan, Geneva, No. 174, circa 1820. Very rare and very fine 18K gold, quarter-repeating barking dog automaton watch.

C. Bruguier & Fils, Geneva, No. 138, retailed by A. Golay Leresche & Fils, Geneva, Rue de la Paix 2, Paris, circa 1860. Very fine gold and enamel, diamond-set singing bird box in a leather fitted box.

Attributable to Frères Rochat and Rémond, Geneva, retailed by Quantin, Joaillier Bijoutier, Palais Royal No. 151, a Paris, circa 1835. Extremely rare and very fine gold and enamel singing bird bracelet with option for singing with medallion open or closed.

Attributable to Freres Rochat, Geneva, circa 1815. Very rare and exceptional 18K gold and enamel singing bird watch.

Patek Philippe & Cie, Genève, No. 868604, case No. 696516, Ref. 2499, third series, made circa 1960. Very fine, rare and important astronomic, 18K yellow gold gentleman's wristwatch with round button chronograph, 30-minute register, perpetual calendar and moon phases, with 18K gold Patek Philippe buckle. Accompanied by the Extract from the Archives.

Case possibly Augsburg, circa 1670, movement by Isaac Phelippon, London, No. 350, circa 1780. Very fine and unusual 20K gold and painted on enamel pendant watch.

The Saint Family Auguste Bretonneau, Paris, enamel attributed to Isaac Gribelin, circa 1640. Exceptional large 20K gold and painted on enamel pre balance spring, single hand pendant watch in glazed protective case.

Montre Perpetuelle Breguet, No 195, montre perpetuelle, started An 5, sold on December 4, 1807 to General Jean Pierre Doumerc for 6000 Francs. Extremely important and rare, 18K gold, astronomical minute-repeating self-winding perpetuelle with 60-hour power reserve, date and phases of the moon, in a Morocco fitted box. Accompanied by a certificate.

Breguet, No. 2516, sold to Baron de Blome for 2000 Francs in 1811. Exceptionally rare and equally fine eight-day going gilt brass astronomical Grande et Petite Sonnerie carriage clock with perpetual calendar, phases of the moon, year indication, alarm and special escapement in original leather fitted box. Accompanied by Breguet certi-ficate.

Breguet, No. 2807, sold to General Yermoloff on August 26, 1817 for 4,000 Francs. Extremely rare and exceptionally fine and elegant 18K gold and enamel astronomical equation of time watch with annual calendar, manual perpetual calendar, phases of the moon and mean and true solar time, in a Morocco fitted box. Accompanied by Breguet Certificate of 1857.

Patek Philippe & Cie., Genève, No. 28939, made in 1867 especially for Louise of Hesse-Cassel, Queen of Denmark, as a gift for her husband King Christian IX, on their 25th wedding anniverssay. Historically important 18K gold, diamond-set, painted on enamel keyless watch with a portrait of the Queen of Denmark.

Breguet, No. 2428, sold on November 19, 1909 to Empress Maria Feodorovna. Very fine and rare large silver hump-back, eight day-going grande et petite sonnerie carriage clock with alarm and quarter-repeating in its original Morocco fitted case.

Patek Philippe & Cie, Genève, No. 867701, case No. 653525, Ref. 1463. Production of this reference started in 1940. Fine and rare, water-resistant, stainless steel gentleman's wristwatch with round button chronograph, register and tachometer.

Patek Philippe & Cie, Genève, No. 668239, case No. 674151, Ref. 1518, 1st series. Production of this reference started in 1941. Very fine and very rare, astronomic, 18K pink gold gentleman's wristwatch with perpetual calendar, moon phases, square button chronograph, register and tachometer, with an 18K pink gold Patek Philippe tiled bracelet.

Chariclea and Theagenes Johannes Wright in Covent Garden, with Blois case attributed to Robert Vauquer circa 1665. Very fine 20K gold and painted on enamel pre-balance spring, single-hand pendant watch.

Noble Lady in Flowers Simon Hackett, London, Blois case attributed to Henry Toutin, circa 1635. Extremely rare and important 20K gold and painted on enamel pre balance spring, single hand pendant watch.

Ilbery, London, movement attributed to Frères Rochat, No. 271, enamel attributed to Jean-Louis Richter, Geneva, circa 1800. Magnificent, highly important, 18K gold and enamel, pin-set petite sonnerie striking clock with singing bird rising and singing every hour or on demand.

Patek Philippe & Cie, Genève, No. 860182, case No. 3588. Unique example produced in 1938. Unique and highly important, astronomic, rectangular curved, platinum gentleman's wristwatch with triple-date calendar à guichets and moon phases. With a platinum Patek Philippe buckle. Accompanied by the Extract from the Archives.

Patek Philippe & Cie., Genève, No. 124942, case No. 235139, circa 1905. Very fine and large 18K gold keyless minute-repeating watch with split-seconds chrono-graph.

Patek Philippe & Cie., Genève, No. 190 977, case No. 410868, sold to Henry Graves on November 11, 1925. Exceptionally fine and rare 18K gold keyless Extra adjusted pocket chronometer awarded Second Prize at the Geneva Observatory Timing Contest 1924-1925. Accom-panied by Extract from the Archives.

Patek Philippe & Cie., Genève, No. 198048, case No. 290540, made for Henry Graves Jr. in 1927. Exceptional, one of only two known, astronomical double barrel, eight day going large silver desk clock with perpetual calendar, phases of the moon and eight day power reserve indicator, accompanied by two original silver/gold/steel keys and matching calendar adjustment pin.

Audemars Piguet, Genève, No. 13530, retailed by Gübelin, Lucerne (Switzerland), circa 1950. Extremely fine and rare, minute-repeating, 18K yellow gold gentleman's wristwatch.

Lot of 35 documents, including: - Original drawing by Louis Cottier of the dial of a World Time clock (project for Patek Philippe), along with a photograph of the prototype. - 4 original black and white photos of an enamel World Time clock made by Louis Cottier; the original of which is in the Beyer Museum, Zurich. - 3 original drawings of World Time dials by Louis Cottier, dated 1945. - Original Patent by L. Cottier for movable dial, September 27, 1930. - Original Patent and Demande de brevet by L. Cottier for World Time systems, June 28, 1949. - Demande de brevet by L. Cottier for World Time systems, July 5, 1949. - Original Patent and Demande de brevet by L. Cottier for World Time systems, July 7, 1948. - Original Patent and Demande de brevet by L. Cottier for World Time systems, February 4, 1948. - 2 original drawings by L. Cottier. - 2 exceptional original drawings of a L. Cottier World Time clock (a very similar clock was sold by Antiquorum on April 13, 1997, lot 601) - Text explaining World Time movable dial. - Set of handwritten notecards by L. Cottier, keeping track of his patent submisssions. - Various documents, including articles on horological subjects.

Lot of 5 documents, including: L. Cottier's personal address book and three notebooks with original horological drawings by Louis Cottier.

Patek Philippe & Cie, Genève, World Time , No. 921709, case No. 632 663, Ref. 1415 HU. Made in 1942, sold on September 1945. Production of this reference started in 1939. Exceptionally fine and very rare, 18K pink gold gentleman's wristwatch with an 18K pink gold Patek Philippe buckle. Accompanied by a fitted box and the Extrait des Registres.

Patek Philippe & Cie, Genève, Calatrava, No. 709888., case No. 312119, Ref. 570, circa 1963. Very fine, large, center-seconds, 18K yellow gold gentleman's wristwatch.

Patek Philippe & Cie, Genève, No. 924397, case No. 633216, Ref. 1491. Made in 1943, sold on February 5, 1944. Production of this reference started in 1940. Fine 18K yellow gold gentleman's wristwatch. Accompanied by the Extract from the Archives.

Gold Feathers and Flowers Ilbery, London, No. 5809, made for the Chinese Market, circa 1815. Very rare and highly decorative 18K gold and enamel center seconds watch with decoration entirely composed of gold paillons and with special escapement.

By the River Ilbery, London, No. 6425 and 6426, circa 1818. Exceptionally fine and very rare pearl-set 18K gold and painted on enamel true pair of watches with special escapements, made for the Chinese market.

Moses Unsigned, attributed to Dubois, Neuchâtel, No. 1, circa 1800. Extremely rare and very fine large 18K pink gold, enamel and pearl-set watch, probably the first 'Moses' automaton, with independent Jacquemart quarter-repeating on a bell and special escapement.

Christian Kintzing a Neuwied, cabinet by David Roentgen, made for Comte Florimond de Mercy-Argenteau, Austrian Ambassador to the Courts of Louis XV and Louis XVI, with original music composed by Christoph Willbald Gluck, circa 1778. Exceptionally fine, rare and important Louis XVI ormolu-mounted mahogany organ and dulcimer eight day-going, four-tune astronomical musical longcase clock fitted with center seconds, date, phases of the moon and striking hours and half-hours with automatic or on demand tune change.

Signed A. Lange & Söhne, Glasshütte, circa 1900. Extremely rare and very fine 18K gold hunting-cased double-train Grande Complication astronomical clockwatch with grande et petite sonnerie, minute-repeating, perpetual calendar, phases of the moon and split-seconds chronograph with 30-minute register.

Unique and Most Complicated Wristwatch in the World Gérald Genta, Geneva, Grande Sonnerie - Rétrograde No. 1, Ref. G 0026, produced in very few examples in 1996. Exceptionally fine and equally important, ultra-thick, double-train, self-winding, water-resistant gentleman's platinum wrist-watch with Westminster chime, Grande et Petite Sonnerie and silent display, four gongs and four hammers, minute-repeating, perpetual calendar, retrograde date, 48-hour power reserve indicator, indicator for the striking, and with one-minute tourbillon regulator in fully engraved movement, four crowns and a platinum Gérald Genta deployant clasp. Accompanied by original box and certificate.

The First French Wearable Precision Timekeeper, the Origin of Modern Horology Louis Berthoud, Paris, No. 9-2280, ordered by Count Chastenay de Puységur, production started 1785, finished in 1786 and delivered in 1787 to Monsieur Cassini, Director of Royal Observatory for study, sold to Baron von Humboldt on October 16, 1798 for 97 gold Louis (2328 livres). Extremely important and exceptionally fine 18K gold watch with free-sprung compensation balance and regulator dial. The first French jeweled watch, the first portable timepiece with friction rollers in the world, the first Montre Marine with Louis Berthoud pivoted detent escapement, and the first with helical balance springs, honored with the highest National French Horological award with 6000 livres and distinction.

Patek Philippe & Cie, Genève, No. 860183, case No. 4178996, Ref. 96. Made in 1937, sold on December 16, 1937. Unique and exceptional, astronomic, 18K yellow gold gentleman's wristwatch with retrograde perpetual calendar and moon phases, with an 18K yellow gold Patek Philippe buckle, the first wristwatch with retrograde perpetual calendar ever created. Accompanied by the Extract of the Archives.

Perret & Martin, Geneva, circa 1900. Very fine and rare 18K gold hunting-cased keyless pocket chronometer with one-minute tourbillon regulator and detent escapement.

Patek Philippe & Cie, Genève, No. 868248, case No. 665024, Ref. 2499, first series, retailed by Frec-cero, made in 1951, sold on September 29, 1955. Production of this reference started in 1951. Exceptional and highly important astronomic, 18K pink gold gentleman's wristwatch with square button chronograph, 30-minute register, internal pulsometer, perpetual calendar and moon phases, with 18K pink gold Patek Philippe buckle. Accom-panied by the Extrait des Registres.

Patek Philippe & Cie, Genève, Pagoda, No.1859437, case No. 4014179, Ref. 5500. Produced in a limited edition of 150 exam-ples in platinum in 1997, sold on November 27, 1997. All examples have been sold. Very fine and very rare, rectangular, flared, bombé, Pagoda-shaped, platinum gentleman's wristwatch with a platinum Patek Philippe buckle. Accompanied by a comme-morative booklet, a certificate, an attestation and a Bulletin de Marche delivered by the Contrôle Officiel Suisse des Chronomètres.

Patek Philippe & Cie, Genève, No. 863413, case No. 636969, Ref. 130. Production of this reference started in 1934. Very fine and rare 18K yellow gold gentleman's wristwatch with square button chronograph, register and tachometer.

Patek Philippe & Cie, Genève, No. 863269, case No. 626189, Ref. 130. Made in 1943, sold on March 27, 1944. Production of this reference started in 1934. Very fine and rare, stainless steel gentleman's wristwatch with square button chronograph, register and tachometer. Accompanied by the Extract from the Archives.

Watch with 8 Complications Patek Philippe & Cie., Genève, No. 90241, case No. 206749, made for Bailey, Banks & Biddle, Philadelphia, circa 1892. Very fine 18K pink gold, moon phase, astronomical, keyless minute-repeating watch with perpetual calendar and split-seconds chronograph, in Patek Philippe leather-covered fitted box.

Pendule Pyramidale and Muses Breguet, Pendule Pyramidale, No. 449, bronzes by Pierre-Philippe Thomire and Nicolas DelaFontaine dit Le Jeune, begun in 1805, sold to Monsieur Follope on March 10, 1827 for 3000 Francs. Exceptionally fine and rare gilt bronze 8 day-going double-barrel precision mantel regulator with overhanging pendulum and patented constant force chronometer escapement, dead seconds and hour and half-hour striking.

The Concert Inventé par Antoine Rojard à Genève, No. 2174, case by Jean-Georges Rémond, Geneva, circa 1810. Extremely fine and rare 18K gold and enamel, pearl-set musical snuffbox with very complex automaton scene.

Patek Philippe & Cie, Genève, No. 868329, case No. 676627, Ref. 1436, made in 1952, sold on November 19, 1955, retailed by Freccero. Production of this reference started in 1938 to 1971. Exceptional and extremely rare, 18K pink gold gentleman's wristwatch with square button split-seconds chronograph, register, tachometer and an 18K pink gold Patek Philippe buckle. Accompanied by the Extrait des Registres.

Breguet, No. 2090, enamel by Lallemand, production started 1806, sold to Esseyd Aly Effendi on September 16, 1808 for 3,360 francs. Extremely fine and very rare 22K gold and enamel pair-cased cabriolet double-train grande et petite sonnerie clockwatch with independent quarter-repeating, accompanied by a certificate and copies of the manufacturing register.

Patek Philippe & Cie, Genève, No. 868628, case No. 2611720, Ref. 2499, third series, made circa 1960. Exceptional and extremely rare astronomic, 18K yellow gold gentle-man's wristwatch with round button chronograph, 30-minute register, perpetual calendar and moon phases, with unusual dial. Accompanied by the Extract from the Archives.

Patek Philippe & Cie, Genève, No. 861182, case No. 674092, Ref. 2524. Production of this reference started in 1955. Very fine, rare, and important, minute-repeating, 18K yellow gold gentleman's wristwatch with an 18K yellow gold Patek Philippe buckle. Accompanied by the Extract from the Archives.

Lézé, Paris, No. 1330, circa 1840. Extremely fine and rare, silver and gilt bronze eight day going, quarter repeating Grande and Petite Sonnerie carriage clock with alarm, date and chronometer escapement, in original fitted traveling case.

Breguet, No. 423/5. Started July 6, 1804, finished 14 December 1808, sold to Emperor Alexander I for 14,000 Francs, entered into the register on February 12, 1809. Extremely rare and highly important mahogany and gilt bronze Pendule Marine with patented constant force escapement, 40-hour power reserve indicator, special lever winding arrangement and visible escapement.