The Blancpain Air Command was originally produced by Blancpain in the 1950s, and was supposedly intended for use by the US Air Force, the US Navy having already adopted the 50 Fathoms diver’s watch. The Air Command was a flyback chronograph, constructed somewhat along the lines of the Type 20 spec, and supposedly 12 watches were made and offered to USAF pilots through Blancpain’s US distributor, Allen Tornek. It’s now an extremely rare grail watch for vintage Blancpain collectors – they’ve appeared at auction very rarely