EU-based professional seller — no import taxes for EU buyers. Get your hands on this serviced 1972 Grand Seiko 5646-7010 vintage Hi-Beat automatic watch with naturally aged champagne dial, new crystal and 3-month functionality guarantee. Model History: The 56GS series was introduced at the beginning of the 1970s and formed one of the final major mechanical Grand Seiko families of the brand’s original vintage era. Produced by Suwa Seikosha, these watches combined restrained dial design, practical everyday functionality and advanced high-frequency movements with the precise case architecture associated with Grand Seiko. Reference 5646-7010 is powered by the day-date calibre 5646, which operates at 28,800 vibrations per hour. The movement combines automatic winding with manual winding, hacking seconds and calendar functionality. Its compact proportions and understated styling reflect Grand Seiko’s emphasis on precision, legibility and refined mechanical engineering. Manufactured in July 1972, this example is particularly notable for its naturally developed champagne-gold dial patina, which gives the watch a warm and individual vintage appearance. Specifications: • Brand: Seiko • Model: Grand Seiko Hi-Beat • Reference: 5646-7010 • Serial number: 271967 • Production date: July 1972 • Movement: Seiko calibre 5646 automatic + manual winding • Functions: Hours, minutes, day and date (English/Kanji), hacking seconds • Case material: Stainless steel • Case diameter: Approx. 36.5 mm excluding the crown; approx. 37.5 mm including the crown • Lug-to-lug: Approx. 41 mm • Lug width: 18 mm • Dial: Originally light-coloured dial with naturally developed champagne-gold patina • Crystal: New, scratch-free • Crown: Signed GS crown • Strap: New black leather strap • Accessories: No original box or papers Condition: The watch is in attractive overall vintage condition. The stainless-steel case shows light scratches, small marks consistent with age and use. Its characteristic angular profile and faceted lugs remain clearly recognisable, and the signed GS crown is present. The originally light-coloured dial has developed a warm and relatively even champagne-gold patina over the decades. This natural ageing gives the watch a distinctive vintage character. The printed details remain clearly legible, while the hands and applied hour markers show some age-related wear and oxidation consistent with the watch’s age. The caseback shows surface scratches and wear. The original gold-coloured GS medallion remains present, although it displays significant deterioration and damage around its perimeter. The crystal is new and scratch-free, and the watch is fitted with a new black leather strap. The movement has been serviced, and all functions operate correctly. A 3-month functionality guarantee is included. I aim to capture the condition of the watch accurately. Please make sure to review the pictures closely before bidding. The watch has been completely serviced by a professional watchmaker and tested for full functionality. The water resistance of the watch cannot be guaranteed. Shipping from Hungary with tracking and insurance. If you have any questions or need support after your purchase, please do not hesitate to contact me. Thank you for condisering this timeless piece, and happy collecting! - SpecialTimer