Unless the tab , on the caseback was broken off and then when you tighten the caseback ring... it can cause the entire movement to twist
Your description is accurate. I'll add photos when I get it back from the watchmaker. He seemed to think the design was a problem, as the center cap moves when one turns the threaded ring. As the center cap rotates, it takes the movement spacer (and thus the movement) with it, trying to rotate the movement and putting pressure on the stem. I understand how this is NOT a problem in Speedmasters, say, since the center cap (i.e. caseback) only touches the movement spacer in a small nipple in the center, and thus cannot transmit much torque. In the Squale, the center cap and movement spacer are touching over their entire area, so if you try to rotate the (tight) center cap, the movement rotates with it. It would be nice if turning the threaded ring did NOT turn the center cap, but when things get tight (near closed), they move together.
Is there any connection between the movement and the movement spacer? I know you have said that there's no provision in the case for case clamps, but realize this is a different question.
Do you know for a fact that the case back was removed? Not referring to an assumption, but do you actually know for certain (have been told by someone or have evidence such as the case back ring orientation being different than when it was shipped) that it was removed?
Cheers, Al
eBay mentioned "notes" from the authenticator, but did not share them with me. I doubt they will. There is no "connection" per se between movement and movement spacer. They touch over their entire surface, however, and friction is what causes one to move when the other is rotated. By analogy, let's say you have a smooth disk sitting on top of a coin. You then press down hard on the disk and rotate it. The coin will try to rotate too, "connected" by friction.
Trust me, I understand how this works. I'm just trying to get a full picture of how this watch goes together. There are many instances where watches do not have case clamps (which by definition attach to the case), but still have a connection from the movement to the movement spacer.
My next question is, do you have a photo of the inside of one of these watches? I would like to see how the movement spacer interacts with the case tube, if it all.
I've never seen a photo of the inside of these cases. The movement is quite small with respect to the diameter of the case. The movement spacer has zero interaction with the stem tube. In fact, my watchmaker suggested the possibility of installing a longer stem tube that would (perhaps, I'm not totally clear) better resist torque when opening/closing. He hasn't gotten back to me yet with specifics on that.
Thanks - yes this uses an ETA 2671 based on what I can find - a small movement and this leads to a larger spacer and longer stem than would be "normal" for a watch this size.
I haven't had the benefit of seeing the inside of this case, but it appears your watchmaker and I were thinking along similar lines.
So here's an example of a watch that illustrates a few things in one photo:
This is a Doxa shipped this way right from the factory. The stem was broken, and I'll get to that part later. But as you can see it has a movement spacer, and the movement is secured to that spacer using screws. The spacer is not connected by movement clamps to the case, but that isn't needed here, because the spacer has a gap in it that goes around the case tube that extends inside the case. This is why I asked, because if the Squale had a case tube that extended inside the case and contacted the spacer in this manner, then the theory of how this happened goes right out the window, because the spacer simply can't turn.
The other thing this illustrates is the even when you do have solid connections inside the watch, and no chance of anything turning when the case back screws down, stems can still break off. In this case at the factory (confirmed by the marks that those screws left in the spacer, which were the only marks) the movement wasn't properly aligned. This means that every time the watch is wound or set, the stem is being flexed, will work harden, and snap off. I've seen this happen on several watches, so it isn't a rare thing.
So we don't know for certain that the case was opened by the authenticator. We don't know if the watch had, from the factory, some misalignment like I've shown above. So what I'm going to suggest is that even if the watch left the seller intact, and arrived with you broken, this doesn't necessarily "prove" that the authenticator had anything to do with it.
Now before anyone jumps down my throat, I'm not looking to blame or absolve anyone here. To me this is a puzzle that I'm solving, and just giving my thoughts. If people want to believe this is the fault of the authenticator, that it's due to untrained or uncaring people, that eBay is evil, or whatever, have at it. All I'm saying is that in my mind, there is definitely doubt that this was the fault of the authenticator.
Cheers, Al
Thanks for clearing that up; it makes sense.
As mentioned, I'm not trying to blame the authenticator. I'm blaming the authentication program. In times past, when I received a broken watch I could return it--even if the seller said "no returns." I've done that twice in 23 years on eBay. With the authentication program that is no longer possible. If the authenticator says it's authentic, that's the end of it. No recourse, no appeal, no nothing.
And that’s my issue with the program. Sure it may be authentic, but you bought a functional watch and it arrived non-functional. Historically that’s grounds for a return. It doesn’t matter who is at fault or what inspectors may or may not have done, it’s the very foundation for confidence in buying on eBay. They are doing damage to themselves by negating this part of the seller/eBay/buyer contract.
I can't find the thread at the moment, and maybe it was on another forum, but I recall a thread where someone was able to return a watch after authentication because it was substantially not as described (event though authentic). So I'm not sure it's correct to say that returns are simply impossible after authentication. However, I do think that valid reasons for returns are more limited than previously.
I can't find the thread at the moment, and maybe it was on another forum, but I recall a thread where someone was able to return a watch after authentication because it was substantially not as described (event though authentic). So I'm not sure it's correct to say that returns are simply impossible after authentication. However, I do think that valid reasons for returns are more limited than previously.
Follow-up:
Thanks to OF member @TDBK I was able to get in touch with the eBay authentication team. I spoke with a couple of them on the phone today. They apologized for how the issue was handled and said that my return request had been rejected too quickly, such that team members higher in the chain never got to see it. After I explained the situation, they looked at the authenticator's notes and said that the authenticator had indeed opened the caseback and found no issues, so it was possible that the stem had broken as the case was being closed. It was also possible (they said) that the stem had broken while the watch was in transit to me. In any event, they are going to send me a refund of the entire purchase price--and I can keep the watch.
Moral: eBay customer service can be very good--if you get hold of the right people.