Quote:
Originally Posted by Classique Breguet
Does the up to 1.5ms beat error mean it needs/would benefit from a service?
It runs from -6 to +4 depending on orientation, but it is the beat error I'm curious about.
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I don't think you'll find a watchmaker who suggests those beat errors are "good", but your timekeeping is actually quite good in the conditions you have measured. I think it comes down to what your goals are with this piece. If you want peace of mind given its unknown history, this would be enough reason to have it serviced. If you simply want to wear a vintage piece and aren't too stressed about perfection, strap it on and enjoy it until you see a more obvious degradation in timekeeping.