I have one of my Ploprof 600's in for service and have just recieved this picture from my WM. I've had it for about ten years and this is the first time I've ever actually seen the movement.
Having a 33 million serial number the cal 1002 dates to around 1971 which I believe was the year of introduction for this model, but I was wondering if anyone has a chart of PP serials, or at least more information regarding the first known serial numbers for this model?
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