Rare Vintage Seiko Quartz 5931-5360 Men’s Classic Dress Watch JDM 1980s

Up for sale is a rare vintage Seiko Quartz 5931-5360 men’s classic dress watch produced for the Japan Domestic Market (JDM) in the 1980s. This elegant ultra-thin rectangular model features a clean gold-tone dial with minimalist styling that perfectly captures the refined design language of early 1980s Seiko dress watches. The watch is in full working condition, and all features and functions of the watch are working properly. The watch is fitted on an aftermarket black leather strap. The watch has signs of use and age, and the photos best describe its physical condition. One of the most unique aspects of this example is the aging and patina present on the case, which has developed an unusual rainbow-like texture and coloration over time, giving the watch a very distinctive appearance. The caseback features an original Japanese commemorative engraving dated June 1981. The engraving references a corporate presentation for Sun World Co., Ltd. commemorating a new company name and presidential celebration. The engraving translates to: “June 1981 Commemoration of the new company name / president Sun World Co., Ltd. Presentation Memorandum” Key Details: • Brand: Seiko • Model: 5931-5360 • Era: 1980s • Movement: Quartz • Dial: Gold-tone • Strap: Aftermarket black leather strap • Case Size: Roughly 29 mm × 35 mm • JDM Model • Special Detail: Original Japanese commemorative caseback engraving dated June 1981 • Condition: Full working condition; signs of use and age; photos best describe its physical condition Ships carefully. Feel free to message me with any questions.