1975 Omega 861 Amplitude after 24hrs
Hello All 😃
It's now for the 3rd time that I'm working on a 1975 Omega Speedmaster Mark II with a 861 movement. The watch, which was never truly loved, used to belong to a family member. Upon my first reception it was in a pretty beaten-up state;
My first service (2017) can be seen here: https://www.watchrepairtalk.com/topic/6842-omega-861-speedmaster-mark-ii/
Even though during the service the mainspring was changed out for an original Omega mainspring, the "after winding"
What's the horizontal amplitude at full wind (minus a few clicks)? It's not uncommon on these to find that the cap jewels have become pitted, which also damages the pivot end. Sometimes you have to turn the jewel just so to see the divot. But your amplitudes in vertical compared to horizontal at 24h look normal, though all are quite low.
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I see these (and 321) quite regularly. If everything looks right and I'm still getting low amplitude, like 260 at full wind, I tend to have a look a
