AI Appraisal Estimate

This is a vintage Seiko 5 Sports automatic wristwatch, specifically identified as the 'Regatta' diver, likely from the early 1970s. The watch features a robust, square-shouldered stainless steel case and a distinctive multi-colored rotating inner bezel with teal, blue, and red segments designed for maritime timing. The dark blue dial contains a day-date aperture at the 3 o'clock position, applied stick markers with aged luminous material, and a bright orange second hand for high visibility. Notable markings include the 'Seiko 5' shield, 'Sports' branding, 'Water 70 Resist', and '21 Jewels' notation. Below the 6 o'clock mark, the dial code 'Japan 6119-6050S' is visible. The watch is presented on a period-correct stainless steel link bracelet. Regarding condition, the Hardlex crystal exhibits significant scratching and surface abrasions consistent with heavy use. The stainless steel case and bracelet show numerous fine scratches and scuffs but retain their sharp edges. Critically, the crown is missing from the 4 o'clock recessed position, which is a significant mechanical and aesthetic defect, though the movement is reported to be in working order. The luminous material on the hands and markers has developed a creamy patina typical of aged tritium or early Promethium paint used by Seiko during this era.

Based on the visual examination of the provided images, I have appraised this vintage Seiko 5 Sports 6119-6050 'Regatta' Diver. The watch presents an authentic dial with the correct 'Japan 6119-6050S' text, '5 Sports' shield, and aged luminous material that has developed a handsome creamy patina. The multi-colored inner rotating bezel appears intact with strong coloration. However, condition issues severely impact its current market value. The Hardlex crystal is heavily scratched, obstructing the dial, and the case and bracelet show extensive wear consistent with heavy use. Most critically, the watch is missing its crown at the 4 o'clock position. While the owner reports the 21-jewel movement is working, the missing crown means the time cannot be set, the day/date cannot be quick-set, and the inner rotating bezel cannot be operated. Sourcing an original crown and stem assembly (and potentially the gear for the inner bezel) for a 6119 movement can be difficult and costly. Vintage Seiko sports watches from the early 1970s enjoy robust demand among collectors, particularly colorful variants like the 'Regatta'. A pristine example can command $500 to $800. However, as a 'project watch' requiring parts and a service performed by a watchmaker, the valuation is adjusted accordingly. Please note that this appraisal is based solely on photographic evidence and owner description. Full authentication and mechanical evaluation require an in-person inspection, specifically opening the case back to verify the integrity of the caliber 6119 movement and assessing whether water intrusion occurred due to the missing crown.