Richard Attenborough wears an unidentified watch

Richard Attenborough plays Lew Moran in The Flight of the Phoenix (1965), here in a tense exchange over an engineer's level. There's a round, dark-strapped watch on the wrist in frame, but the high-contrast black-and-white still won't resolve the case or dial into anything readable. A dark-strapped wristwatch is all I can give you. If you can place it, or want to guess, leave it in the comments.