I have an automatic seamaster that's about two years old and last week it started running really fast, gaining about 10 min/hr! I've let it run down and then tried to 'restart' it, but that hasn't helped. Anybody have any idea what's wrong with it?
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The hairspring might also be dirty and therefore sticking to itself. The hairspring is about the only thing that will cause this much gain. Mr. McPherson's answer may also be correct. Michael, Wostep
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