Looking for information on Universal Geneve 1945-46 Tri-Compax

If you don't tell me the serial it is hard to show you a close serial.... But it will be 1156/7 😀 Dial is legit

I think there are ones with gold-plated tops and steel casebacks.

https://everywatch.com/universal-geneve/22258/watch-32354053

Serial numbers seem to be in the 1,156,xxx to 1,157xxx range, including the OP’s example above.

I can’t imagine that all 3 of these are frankens.
gatorcpa

22258 is indeed a SS reference, but we've seen enough of these now I think we can assume it's got something to do with UG. Maybe it's gold cap and not gold plate (gold plate reference should start with 4) and so they left it under SS. I don't know, doesn't really make sense and it's kinda weird.
Getting back to the OP watch, looks nice, in good condition, the running seconds hand has been replaced. The hour and minute hands look weird, not something I used to. I would think leaf hands would be more typical, but if they match each other I would probably leave it alone.
If you can find a running seconds hand, either polish or replace the crystal, and probably due for a full service, you will have a very nice watch.
For this serial range I would expect a moon with face, but all three examples in this thread are similar serial and they are all faceless, so I don't know, maybe that's normal for these models which are already unusual to begin with.

I know another 22258 with it and I have no clue.

Dial is legit but in this batch of 22258's I have no comparable.

575:


646:

Here’s an enlargement of the top right lug of the Everwatch example I posted above.


You can see where the gold is flaking off the case. I’m not sure if this is thick enough to be considered anything more than gold-filled. For Polerouters, it is my understanding that UG used 300 micron gold capping, which is a bit more than Omega or Rolex used at that time.

My guess is these were some kind of gold plate or gold filled case, maybe only for US market. Without pictures of the movements, we cannot tell.

gatorcpa