Released in 2024 to celebrate 100 years of the first Seiko branded watch, the SPB441J is based around that very first Seiko-branded wristwatch and contains a special white enamel dial, and classic pocket watch aesthetic very much so reminiscent of the 1924 muse. These were limited to just 1000 pieces, and are very highly prized not only by Seiko collectors, but anyone with a love of artisanal watchmaking.