Rare Vintage Seiko Le Vent Crescent Moon 1F20-5J60 Sayoko Yamaguchi Design Watch

Up for sale is an extremely rare vintage Seiko Le Vent Crescent Moon Quartz dress watch, reference 1F20-5J60, produced for the Japan Domestic Market (JDM) in the 1990s. This highly distinctive model was created in collaboration with legendary Japanese supermodel Sayoko Yamaguchi and stands as one of the most unconventional and artistic designs ever released by Seiko—widely regarded as a true grail among serious Seiko collectors. The watch is in full working condition, with all features and functions operating properly. Timekeeping is accurate and the movement performs as intended. This piece features the iconic asymmetrical crescent-shaped gold-tone case paired with a minimalist dial, embodying the avant-garde design language that made the Le Vent series so memorable. The sculptural case form and elegant proportions give the watch a strong presence while remaining refined and wearable. This example comes complete with its original instruction manual, adding to its overall collectibility. The strap appears original based on its construction and age-consistent wear, though this cannot be confirmed with absolute certainty. The watch shows signs of use and age, and the photos best describe its physical condition. The case measures approximately 21mm x 37mm, placing it in a versatile size range—suitable as a standard men’s dress watch or a larger women’s watch. Key Details: • Brand: Seiko • Line: Le Vent Crescent Moon • Reference: 1F20-5J60 • Movement: Quartz • Era: 1990s • Origin: Japan Domestic Market (JDM) • Case Shape: Asymmetrical crescent • Case Size: Approx. 21mm x 37mm • Condition: Full working condition; signs of use and age • Collaboration: Sayoko Yamaguchi • Includes: Original instruction manual This is an exceptionally rare and artistically significant Seiko—one of the most unique watches the brand has ever produced and a centerpiece-worthy example for advanced collectors. Ships carefully. Feel free to message me with any questions.