AnalogSteph
Major Contributor
Not usually, though it is not uncommon to see vintage quartz movements steadily run fast by about half a second to around a full second a day (ironically, the worst offenders tend to be adjustable movements, presumably oxidation of trimmer caps is playing a role here, but my usual watchmaker around here won't touch these - even as much as 1 s/d still barely registers on his equipment). When it comes to keeping time, the best in my collection right now is a basically noname job with a GDR movement that technically was almost a decade out of date even when it came out on 1987 - go figure.I know literally nothing about watches (I just googled "watch movement" lol), but I would imagine mechanical watches like those of Seiko and Rolex are inferior when it comes to keeping time compared with digital alternatives? Am I wrong?
That said, Chinese mechanical movements in particular are notorious for the odd bit of contamination, even if the design itself is basically sound. So it's largely a matter of production standards.