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Author: CoolLuke - Replies: 2 - Views: 1704
The Seikomatic Silverwave: birth of a diver
The first fully fledged waterproof Seiko watch appeared in 1959 in the form of the Seiko Cronos Sea horse fitted with the 21 jewel manual wind Cronos 54/54A movement. That watch was equipped with a two part screw down case back and was rated water proof to 50m. Although it was actively marketed in some sense as a divers watch, in reality its use would have been limited at best to swimming or snorkeling.

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Author: CoolLuke - Replies: 2 - Views: 1888
The Seikomatic Silverwave: birth of a diver
The first fully fledged waterproof Seiko watch appeared in 1959 in the form of the Seiko Cronos Sea horse fitted with the 21 jewel manual wind Cronos 54/54A movement. That watch was equipped with a two part screw down case back and was rated water proof to 50m. Although it was actively marketed in some sense as a divers watch, in reality its use would have been limited at best to swimming or snorkeling.

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Author: Collectionist - Replies: 3 - Views: 77
Seiko Chronometers - the birth of Grand Seiko
[color=#000000][size=medium][font=Calibri, sans-serif]Grand Seiko, the model shown below, was originally called the Seikomatic Chronometer and (for the first time) housed an automatic movement running at 19.800bph, the caliber 6200. It was introduced in 1966 but produced already in late 1965. There is some confusion with the other Seikomatics of the sixties, but let’s not forget that Seikomatic merely indicated a contraction of Seiko and Automatic. More on this just below.[/