This is the Seikomatic Self-Dater Diashock SM62 produced in 1963. This watch comes in conventional round shaped stainless steel case that is measuring 37mm excluding its crown.
As its name suggested it has a quickset date function at 3 o'clock position. This watch has a very clean white dial with raised silver baton hour markers. Complimenting the dial is the silver dauphne hands. It was stated on the dial that this one is water proofing to 30 meter and has a 24 jewels automatic movement.
The crown is unsigned and is concealed inside the watch case. This watch has an acrylic crystal.
This watch has a snap on backcase. Due to the wear and tear, the engraving at the back has became invisible to the naked eyes. It should have a whale engraving at the back.
What made this watch in my Seiko collection is the Caliber 394 movements. 394 is an automatic movement with a beat rate of 18,000 bph. It cannot be hand winded. 394 is what the 6205 was called prior to the reorganization of Seiko movement in the mid 1960's. This movement served as the base for the 39 jewels Cal.395, 6205B and also the first generation automatic Grand Seiko line of 6245 and 6246.
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