Junghans B42. These just seem to be tough clocks to overhaul. Anyway, this one came in from out of state and I thought I had it finished. Lots of problems with it from previous bad repairs. As you can see, the "punchers" (remember them ?) already had their way with it. Big difference here is that these punchers took some "pride" in their butcher job and did all the damage on the inside of the plates where it isn't noticeable.
It was running just fine on the test stand for days. just before I was going to put it back in it/s case I thought I would run it thru the chime cycle a few more times. I noticed that only on the hour it would just hiccup a bit. Never enough to jam, but just a slight hangup.
Started inspecting with some magnification and spotted the problem. In situations like this you don't even get mad. It's more of a sick to your stomach feeling.
Probably good that I spotted it because after I got it out and started making a replacement, I noticed that several others had been replaced with simple taper pins. These pieces have to be hardened steel and taper pins are way too soft and were an accident waiting to happen.