Nice Rolex/Tudor hommage ;-) Legit I think. UN also produced a 1:1 copy of the Daytona btw
Weird for them to hommage professionnal piece dedicated to Marine/Diving while they still have the most patents in that fields and highly appraised.
Patents? For marine chronometers, yes, but not their wrist divers. The latter were, to my knowledge, neither innovative, nor of particularly high quality.
At least the one shown features a full steel case, as the one linked was chrome-topped!
Dont think they did all of them but I do think these era was not one UN will be very proud of in hindsight…
The watch featured in the thread is 43mm without the crown, definitely Sea dweller inspired, which is the first watch that came with the helium valve in 1967 in collaboration with COMEX.
43mm? I'm skeptical that it is genuine. The one that you characterized as being "similar" was 36mm, and I can find nothing like the one that you have shown. Find one other, and I'll be happy to reconsider.