Omega Vintage Manual Wind Wristwatch – Cal. 620 – Ref. 511.915 – c. 1964 Original vintage Omega wristwatch dating to circa 1964, based on the movement serial number 23521492. A clean and honest example of Omega’s classic mid-century dress watches. The watch is fitted with its original stainless-steel case, reference 511.915, measuring approximately 20 mm excluding the crown. The case retains correct geometry with straight lugs and shows light surface wear only, consistent with age. No signs of over-polishing. The original dial features a cream finish with applied baton hour markers and an applied Omega logo. The dial shows even, attractive patina and light age-related marks, with no evidence of restoration or repainting. Hands are original and correct for the model. Inside is the Omega calibre 620, a high-quality manual-wind movement fully signed “Omega Watch Co. Swiss”. The movement serial number 23521492 dates production to approximately 1964. The watch is running at the time of listing. Regulation markings (A/R) are visible. No service history is known. The inside caseback is correctly signed Omega Watch Co. – Fab. Suisse – Acier Inoxydable, confirming originality. Fitted with a replacement blue (looks black in the picture!) leather strap but also included is stainless steel bracelet it came on Condition: - Case: Very good – light wear, sharp lines - Dial: Very good – original, even patina, no refinishing - Movement: Good – running, no service history - Overall: Very good vintage condition for age Technical details: - Brand: Omega - Year: c. 1964 - Reference: 511.915 - Movement: Manual wind, Omega calibre 620 - Case material: Stainless steel - Diameter: approx. 20 mm (excluding crown) - Crystal: Acrylic - Strap: Replacement leather with original stainless steel bracelet included A well-preserved, correctly configured vintage Omega with confirmed dating, ideal for collectors seeking originality and classic 1960s design.