I originally posted this thread in a similar thread but I was told to open a new thread. So I am posting this here again. I apologise in advance if I caused any inconvenience.
I am new to this forum and very new to vintage watches. Having a collection of luxury watches (all purchased new) I thought to give a go to vintage watches and as a first attempt, I bought a UN vintage off an auction website in Switzerland (the country of most luxury watches). The attached pictures are this latest purchase. But after reading several sites and forums, I am now worried if my first investment was a bit in rush and I bought myself a fake UN watch.
The previous owner claimed the watch to be of 1950s but the UN website is extremely poor in presenting old or discontinued models (I am very surprised they don't have a museum style online catalogue to show their glorious days!) So not much information on the net. These are my concerns:
1- The logo on the dial is UN current logo. When did UN start using this logo? Does the logo goes back as far as 50s?
2- The date on 3 o'clock has a Rolex type magnifier which I have not seen anywhere (perhaps a new glass)?
3- The arabic dials are only on 6 and 12 and other models I could find are either without number or numbers are on 3, 6, 9 and 12 (with exception of 3 being replaced with the date in some models)
4- The back is stainless steel without UN marking but inside there is its mark in the middle. I think since the case (presumably) is gold plated it is normal for a watch to have stainless steel back but I need your expert view on this too.
5- The movement seems to be old with even some tarnish but again the same logo without any reference number or serial number can be seen.
Now in your expert opinion, is this a fake vintage, What caliber is it and if real how old is it?
Thanks for your inputs. It is highly appreciated.