Back to this topic, on which I did contribute something nearly two years ago.
I've now had my C60 just over two years, and it's still gaining. Less so than before, but noticeably. I've just monitored it over a week, using this site (
http://www.timeanddate.com/worldclock/uk/london) as my reference, and in 7 days it has gained 50 seconds - so that's just about 7 seconds a day, and indeed the daily increase was regular and very close to that. In the two years since it was new I've worn it almost every day an in all that time I think it has only run down once, and then only for a few hours. So it's well run-in.
Now I'd appreciate some advice, please. Is this 'normal', now that the watch has left the first flush of its youth? I don't know because I have no experience of automatic watches other than with this one. (My C5 MkII is not often worn so it spends most of its time stopped.) I know it's not a COSC-guaranteed watch so it's not going to be spot-on accurate, but I do feel that I would like it to be more accurate than it is; it would be good to be resetting it once every couple of months instead of once every couple of weeks. Or am I expecting too much? Advice, please.