I’m still wearing my CB, which I got back from my watchmaker last week. While it now keeps excellent time (only about two second a day gain), it’s still occasionally stopping.
It stopped for a second time last night, the same way as before: in the middle of clicking over the minute counter. I take photos every time this happens and I think I’m closer to diagnosing the problem.
Here are the photos, one from last Friday and the other from last night.
Both times, it stalled on the move from 57 to 58 minutes. In both instances, the movement restarted as soon as I pressed the top pusher, disengaging the chrono. As well, in both instances, the watch was less than ten winds from fully wound. (By my count, full wound from completely down on Speedmasters is a little over thirty winds.)
I’ll keep wearing it and photographing when it stops. I’m assuming there’s a gear problem?