Quote:
Originally Posted by Tools
A 20 year old watch should not need to "settle down".
If you have wound it fully, and it exhibits erratic time keeping, something this old is likely suffering from lack of oil someplace, or dry pallet grease, or the like.  |
This. I bought a 10 year old sub that was practically unworn but it was about +10 with low amplitude. Took it in for a look and it was dry inside; which can exacerbate wear. After service it is about +1.5-2. FWIW, they said the seals were fine and it was still waterproof but replaced them anyway as part of the service.