Thank you all. i´m sure its a 178. And i don´t like the big/golden Breitling signature. The auction is mine, but i don´t want to fool anyone or use this forum to announce the auction. i´m only curious, what kind of mariage (?) this could be. I bought that navitimer last week from a friend and can return or swap it at any time. As mentioned in the auction text its from 1964 and the lugs are a bit polished, but the face is nice...