A client has sent me his Omega chronograph featuring an early 321. He got the watch in exchange for cutting some firewood back in 1979.. It has since been lying in a drawer. I would say that was a pretty good deal if you think of today’s values;) He would like to have the watch repaired and of course a new set of hands as they are missing. I had a little brain twister when testing the watch. The hour recorder would not reset between 5.30-6.30. Not only that, but the hour recorder would stop working completely. (You can see this issue on the first and third photo)… Removing the hands and dial I discovered that the hammer would jam underneath the hour recorder wheel and get stuck. Inspecting the hour recorder wheel I noticed the hammer hart was a tiny bit thinner at the tip than the rest. That happened to the only position where the hammer would jam. To remedy the problem I unscrewed the hammer hart from the hour recorder wheel and cut a dial washer to shape, I fitted the washer between the hammer hart and hour recorder wheel. The extra hight now made the hour recorder reset effortlessly in every position.