Gut feel? Sigh. It's not gut feel Adam, that's a "this style of watch doesn't match up with it's purported story".
To the best of my knowledge, the only sweep second model 1942 watches produced prior to the 6/0 C (which came out in 1945) was the A-11 Hack navigation watch; which was only issued to the military in appropriate cases with appropriate dials. Since the lendlease program ended in 1945, that makes the odds of it including such a watch somewhat unlikely. Not impossible, but then that's why I'm willing to reserve judgement until I see the movement and serial number.