These are physically large watches bigger than other C Cases of their era, larger than a Omega Cosmic or Constellation or the Longines Admirals of their day
I am very grateful that I can finally contribute to this thread: Razor sharp case edges, original crown and a pristine dial for an absolute steal of a price. Very bad pictures of the seller scared many people off I guess but I was really lucky.
Thank you very much @yvrclimber ! I will have it serviced at my watchmaker as I don't know the previous service history and I'll need to find a nice strap for it. Then its good to go, I am very glad to have found such a great example in immaculate, all original condition.
@Meya if you are on IG, there is a #ferroviefriday hashtag a few avid UG FS collectors have used. If you want to find others with an interest, advice, photos, etc. Not super active, but it's a path. And of course, this thread.