In every great line of timepieces, there is always a first. For Seiko, the 62MAS (autoMAtic Selfdater) was the first professional dive watch produced, way back in 1965. It has since reached celebrity status among watch lovers.
The 62MAS featured 150m water resistance (up from 50m of anything prior by the brand), achieved by a screw-down caseback and gaskets. Key features included strong lume, a proportionately large 3 o'clock crown and large lugs. Original examples are very difficult to find, and the Seiko reissue SLA017 trends around $10,000 - $12,000 NZD.
Sized typically for its day, the original 62MAS measuring 37mm diameter. This is a tad dainty for today's standards, as such I have instead sought to take the design language of the original and reinterpret it in a larger case more befitting of modern dive watches.