So here's an interesting one. I can't even begin to identify it and it has some odd characteristics.
The movement is a 21 jewel 6AK with a very clear omega data code. The case is marked "Bulova Fifth Ave New York. It's 10 K yellow gold filled.
My guess is 1940 for both the movement and the case but that's outside of the listed date range for the movement. I've had no luck so far with the ads.