1973 Seiko (Ref. 6138-0030) “Kakume”


The 6138-0030 nicknamed "Kakume" apparently meaning square eyes was released in 1970. It was the first fully integrated automatic chronograph with a column wheel and vertical clutch coupling mechanism.

Unlike most modern chronographs it is actually better to let the chronograph run on the 6138/9 movements. When engaging a modern chronograph it adds tension to the movement. The opposite happens with the 6138/9 movement, the chronograph is always running, so when you stop it, it then adds tension to the movement. 

Brand: Seiko

Model: Speedtimer "Kakume"
Reference: 6138-0030
Year: October 1973
Case: 43mm
Lug to lug: 44mm
Material: Stainless Steel
Strap: Seiko bracelet
Box/Papers: No

-The blue dial is in excellent condition.
-The bezel has faded to a beautiful lighter blue.
-Hands have matching patina.
-Case is in very good condition for its age, overall a really nice example.
-Service history is unknown but running on spec.

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