From 1928. Though the silver case has tarnished quite a bit since this pic was taken, and rather matches the brown strap and lume!
I think this is the only Breitling I've ever seen that I really love! What a great piece... I'm beginning to think I might need to focus on space watches, lol. I just spent time looking at Seiko Pogues and Strelas and Rolex GMTs... Oh my....