So I got the watch today, and I
think it's in better condition than it looked...
1. Hands. While I originally thought the hands looked like obvious superluminova replacements, under the loupe, they appear aged. Perhaps more importantly, they appear to fade in the dark at the same rate as the dial, which makes me think they are actually tritium. The color does still look a little paler than the dial, so could they just have patina'd differently (as happens on the 90s era Seamaster 300s)? Or perhaps they are a tritium set from a different original watch? (For what it's worth, the seller did assert the originality of all components of the watch). What do you think?
2. Case/polishing. Sometimes photos from this seller (Closer) appear to indicate mild-to-moderate polishing, but under the loupe, while there are certainly many very small dings, the case edges still appear quite sharp, so would you agree that it appears to have little-to-no polishing?
3. Crown/pushers. Since I originally thought the hands were replacements, I assumed the crown/pushers were too, but under the loupe, they appear appropriately aged, so I think they could be original; thoughts?
3. Bezel. I was also unsure of the originality/authenticity of the bezel, and here I am still unsure. My original concern was how some of the dots appeared to smash into the numbers, particularly the 110-150 markers, and to a lesser extent, the 65-90 markers. Is this a known issue on any bezel, type B2 or otherwise, or for original, service, or fake bezels? What is your assessment of this bezel?
4. Movement. To my relatively untrained eye, the movement looks ok? (With an appropriately ranged serial number). I assume it is signed 866 (the correct caliber), even though at first I thought it might have said 855. And I've seen the "Unadjusted" on some 861s but not on others, why do some movements have this engraving?
5. Operation. Here's the potential rub. At first everything seemed to wind and set appropriately, including the hour/minute/second hand, chronograph hands, date, and moonphase. And while there was some beat error (1.6ms, but I've seen worse), the rate was pretty good (-1-2 sec/day). But I did notice that the crown didn't stop winding around 40-50 turns like my 1861 and 321 do. Then a couple hours later, I picked it back up and gave it another few winds, and I noticed at this point that it had stopped running. So what could have happened? Could I really have snapped the mainspring? I am quite familiar with how attempting to wind a fully wound crown feels, and I never felt ANY tension of this sort while winding this one. But why else would it have stopped working? And why would it not stop winding in the first place but have been running fine initially? Could it have already been broken but still run fine at first?
I generally assume that any vintage watch with an unknown service history may need a complete service, so even if that's the case here, the price I paid more than makes up for it. But I was sort of getting used to pleasant surprises (including the condition of the dial and 1450 bracelet, which both appear excellent), and I was thinking at first that it wouldn't even need a service, at least not right away. Curious to hear anyone's thoughts!
Edit: per this thread, I guess it's possible for it to appear to run normally even with a broken mainspring?
@Archer https://omegaforums.net/threads/how-to-know-if-cal-861-main-spring-is-broken.88464/