I have a real puzzle on my hands: A 16s Waltham Vanguard 23J that I recently serviced. I bought it in non-running condition, and all that appeared wrong was dirt and a missing hand and crystal. After the service, the watch runs with great motion and looks great on the B-200. Likewise, when I run it in any position on the bench, it keeps great time, for as long as I care to watch it. However, when carried in the pocket, it loses time and sometimes quite radically. Then again, it might go for a day with no problem. This evening, it lost about 10-15 mins over three hours. The second hand seems to rotate correctly, and I have tightened the canon pinion to the point where the hands set with what I consider to be just a trifle more stiffness than I would normally use. The hands have good clearance and don't hit the crystal, nor does the center post. The hands also remain in sync with each other.I demaged as well, as I do with every movement. Maybe I'm overlooking something obvious, but this one has me stumped. Any ideas? Thanks.
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