I have to thank everybody so far for each valuable contribution: it is much appreciated. Seems that the unsigned crown is correct. I don't have any picture of the watch, unfortunately: it is (believe it or not!) an old fashion, direct, not web-generated negotiation between two private collectors. If
My first post for a topic that I'm sure is going to be easy for you, but unknown territory for me. I've been offered a steel Chronometre, end of '40s. The watch itself is in a superb shape, but the crown is a plain, unsigned one. Question: is it correct? Did Omega use to sign their crowns for that m