Hi
I wonder if anyone could tell me anything about this ol' thing:




I think the number on the case back might date it to around 1950 (if it's legit, obviously). The case looks a bit too modern in my opinion, but I could be totally wrong - I'm a proper noob

. Obviously the strap is a recent addition. The dial looks quite blemish free, so again, I'm not sure if it's original. It's about 36mm not including the crown, and the lugs are 17mm. The second hand sweeps, which I guess is correct.
Any ideas Breitling fans? Thanks in advance

Thanks