A stainless steel, Seiko divers watch, circa 1967. Model reference 6217-8001 SKO62MAS-4. 37 mm stainless steel case with graduated divers bezel. Seiko 17 jewel automatic mechanical movement. Grey dial, luminous baton markers and matching baton hands, date at 3 o'clock, with plexi-hesalite domed crystal glass,. Case is presented on an aftermarket single pass NATO style strap. Watch only. In working order. The Seiko reference 6217 more commonly known as the 62MAS, is the very first Seiko dive watch ever produced and it occupies an incredibly important role within the brand's overall history. Within two short months the small crown of the 8000 was replaced by the famous "Big Crown" of the 6217-8001. First launched in 1965, the Seiko 62MAS was the brand's original debut in the underwater world, and it served as the foundation for countless other Seiko dive watches that would be released during the years that followed. With its utilitarian appearance, highly legible dial, and clean case shape without crown guards, the Seiko Diver 62MAS embodies everything that we love about early dive watches.