Black Bay 58 long-term timekeeping stability
By: JohnFM : January 10th, 2021-10:22
Hi all, I'm close to buying a new BB58 that is averaging +0.5 sec/day, per the AD's testing. This is excellent, of course. My question is whether the BB58 tends to 'settle in' or slow down over the course of the first year. I've experienced this with vari...