maxbelg
·Well let me be contrary for a moment. I don't think anything has been established at all. I will withhold judgement until we see the inside case back reference number, see the movement and know the movement number. I agree that there are indications it might be a 321 based on the tick count, but you are assuming that the chronograph mechanism is correctly adjusted. On a poorly adjusted Chrono the ticks will not always be even or regular. Just repeating what I think a few watchmakers who know 321/861 movements I suspect would tell you. I mean I am far happier seeing the evidence with my own eyes. Don't fully disregard that method but it assumes much at this stage, I suspect.
Sure, let's wait and see, however I don't think even a badly running watch can develop a beat rate of 18000 when it's supposed to be 21600. Another way I test is of course with the microphone of my earphones of my iPhone with an App like Timegrapher. The App can detect the beat rate automatically and quite accurately. Then the chronograph doesn't need to be running. Of course it could be another 18000 beat rate chronograph movement CH27 and not a correct 321............
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