My very recent intro to watchmaking has been a reviving a load of inherited watches rediscovered while cleaning out some old stuff in the house.
This is a combination of ladies and men's. 3 of them automatics. Without exception, the automatics, when initially brought back to life, would run fast, on the order of up to 5-6 seconds per minute. The wind-up watches, on the other hand, without exception, would start running on time with only minimal work.
Coincidence? Or is there something about automatics that I'm not understanding?