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Seiko

Nice catch!

 

The 4s76 movt is the better decorated variant of the 4s36 found in the SARN001. It's not the only time that Seiko did this. The same relationship is also found between the handwinding only 4s29 and 4s79 movements, etc.

Curiously enough, the accuracy spec is the same for both 4s76 and 4s36. This is the only time it happened as far as I know.

Also, for some reason, only the 4s family has so many different variants built on the base 4s15 caliber,beating the current 8L and 9S families hands down!

Enjoy the watch in good health!

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