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Re: 1958 Seamaster Timing

In Response To: 1958 Seamaster Timing ()

: Hi Everyone

: I recently bought a 1958 Seamaster with a 501
: calibre fitted. After timing it, it loses 6
: seconds a day then gains 6 seconds during
: the night when I'm not wearing it. Is that
: normal or I send it away for repair? Thanks,
: look forward to hearing from anyone.

Sounds like "positional error". A good watchmaker can reduce, but not eliminate the issue.

So, in any case, it sounds like the watch is spot on over 24 hours. Set exactly at 6am, gain 6 seconds when measured at 10pm, lose 6 seconds until the next 6am. End a 24 hour period exactly correct -- what is the worry with that?

Your 50 year old watch is keeping time just outside of COSC standards. Yes, it could be improved, but . . . if you want superaccuracy, you should try a quartz. Mechanical watches are not perfect timekeepers and never will be.

Sam

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1958 Seamaster Timing

Re: 1958 Seamaster Timing

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1 wallclock secs ( 0.19 usr + 0.03 sys = 0.22 CPU)