Seiko Vintage 62 MAS Diver's 6217-8001 1965 Dolphin case back Brand Seiko Reference number 6217-8001 Movement Automatic Year of production 1965 Scope of delivery No original box, no original papers Caliber Movement Automatic Caliber/movement 6217 Case Case diameter 37 mm Bracelet/strap Lug width 18 mm Description Seiko and Japan's first commercial dive watch was first released in 1965 and is now referred to by collectors as the "62MAS." It was initially introduced as the reference 6217-8000 with "small crown" and later updated to the ref. 6217-8001 with "big crown." Dial & hands have been replaced please use photos as part of the description. Case: signs of use consistent with age. All functions of the watch operate flawlessly. The recently serviced movement