WS 19: Servicing a SEIKO Chronograph 6138

This is again the dial side, the day and date disk, the calendar mechanism and the wheels for the hour counter (which sit on the dial side) have been removed. Also very interesting, the driving wheel for the hour counter sits on the arbor of the main barrel. It is not only interesting to know that, it is also important. Because many of those wheels get damaged if "watchmakers" hold the main spring barrel arbor with a pair of steel pliers trying to open the cover of the barrel.

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