Reverend Rob
Posted June 20, 2019 - 12:39am
It makes me think Beau, but I can't find any match.
Your ratchet screw is missing. If the watch is running, let it run right down and find a replacement for that screw. If the watch is fully wound and that ratchet wheel lifts, the entire force of the mainspring will let go and backlash the gear train. Not guaranteed to cause damage, but it could.
Another thing to be careful of- when replacing the screw, hold the ratchet click with a pegwood or brass tweezers so it can't rotate, and you will be able to lightly tighten the ratchet screw. The trick is to NOT overtighten this screw, as they break easily, as they are hardened.