This turned up today, it needs some love, notably a new hair spring and attention to the chrono, but otherwise, I think it is a straight watch. Serial is 780xxx, which seems right, but there are a couple of little bits I am less sure on. Notably, the Breitling engraved on the case back and also the movement bridge. I was under the impression that this didn't appear till a bit later? However, the various parts of the movement all look like they belong together and the dial is most certainly legit. The inside of the caseback has service marks from '54, '57 and '59
Opinions welcome.
