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franzspeck · 9 December 2020, 10:56 PM

Hello

I have an oyster perpetual date with case serial number dating to early 70s.

Supposedly, as a non-GMT date, it has the 1575 variant of 1570 caliber. Which to my knowledge is has quick-set date and is hacking.

The watch is non-hacking.
The date has no detent for quicksetting.
The crown only has 1 detent position (after unwinding) where the time can be set, so date needs to be advanced by winding through X*24hr...

I don't have access to the inside of the case, but is this the proper mechanics for an OPd of this vintage?

9 December 2020, 10:56 PM	#1
franzspeck "TRF" Member Join Date: Sep 2018 Location: EU Posts: 4	Is this legitimate movement on 1970s OPd? Hello I have an oyster perpetual date with case serial number dating to early 70s. Supposedly, as a non-GMT date, it has the 1575 variant of 1570 caliber. Which to my knowledge is has quick-set date and is hacking. The watch is non-hacking. The date has no detent for quicksetting. The crown only has 1 detent position (after unwinding) where the time can be set, so date needs to be advanced by winding through X*24hr... I don't have access to the inside of the case, but is this the proper mechanics for an OPd of this vintage?

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