The 5105 you know it for sure... www.watchprosite.com and the ref 425 was in production from 1935 - 1960 with a very art deco design This beautiful one is a kind of neovintage I like it a lot specially with such a wonderful caliber!
I think it is a fantastic watch, Perhaps a tad too big…. Obviously it has been a terrible toxic partnership in the end, but it created a great watch. Thx for sharing, Dirk