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Thought I would stir up a bit of controversy this quiet Wednesday evening! The generally accepted first Seiko diver is:
"The 150m water proof 6217 "62MAS" is Seiko (and Japan´s) first true diver, and as such enjoys a position of undisputed horological significance."
However, depending on our definition of dive watches, the following statement can also be made:
"Prior to the 1964 Tokyo Olympics (with Seiko as Official Timer), Seiko had introduced its first range of truly submersible sport divers with (internal) rotating countdown bezels (in the form of the Seikomatic 50m Silverwave (1962) and the Sportsmatic 30m Silverwave (1964). "
1964 Seikomatic 30m Silverwave diver (left) with 1967 62MAS diver (right)
So, the question is - is the 62MAS really undisputed as "the first" and which, in your opinion, is the real "first Seiko dive watch"? Look forward to hear your thoughts and reasoning!
"The 150m water proof 6217 "62MAS" is Seiko (and Japan´s) first true diver, and as such enjoys a position of undisputed horological significance."
However, depending on our definition of dive watches, the following statement can also be made:
"Prior to the 1964 Tokyo Olympics (with Seiko as Official Timer), Seiko had introduced its first range of truly submersible sport divers with (internal) rotating countdown bezels (in the form of the Seikomatic 50m Silverwave (1962) and the Sportsmatic 30m Silverwave (1964). "

1964 Seikomatic 30m Silverwave diver (left) with 1967 62MAS diver (right)
So, the question is - is the 62MAS really undisputed as "the first" and which, in your opinion, is the real "first Seiko dive watch"? Look forward to hear your thoughts and reasoning!