Seiko Pre-War Men’s Staybrite Swiss 15J Manual Wind Dress Watch JDM 1930s

Up for sale is an extremely rare pre-war antique Seiko men’s manual wind wristwatch, dating to approximately the 1930s and representing a fascinating period in the early history of Japanese watchmaking. This historically significant timepiece features a Swiss-made 15-jewel mechanical movement, likely from the A. Schild AS 340 family. Historical records indicate that Seiko utilized imported Swiss movements during this period alongside its own Japanese manufacturing operations, making this an especially interesting example of early Seiko watchmaking. The movement is potentially original to the watch, although this has not been definitively confirmed. The watch is being sold for parts and repair as it is currently not running and does not wind when the crown is turned. The watch has not been serviced or restored, and the exact cause of the mechanical issue and its repairability are unknown. It is being sold as is. The watch is fitted on an aftermarket black leather strap. The watch has signs of use and age consistent with a worn antique timepiece, including scratches, discoloration, plating wear, and oxidation throughout. The photos best describe its physical condition. Key Details: * Brand: Seiko * Era: Approximately 1930s (Pre-War) * Market: JDM (Japan Domestic Market) * Movement: Swiss-made 15-jewel manual wind mechanical movement * Movement Family: Likely A. Schild AS 340 (unconfirmed) * Dial: Seiko signed * Case Size: Approximately 26 mm × 32 mm * Case Back: Staybrite stainless steel back * Strap: Aftermarket black leather strap * Condition: Parts and repair, currently not running and unable to wind Ships carefully. Feel free to message me with any questions.