Bulova 1944 Cadet "A"
Guessing this could be a Cambridge, but far from sure.
The crown is not stamped. Inside the backplate, it says "Bulova, 10K rolled gold plate bezel, sterling base, stainless back, New York". Someone has also scratched some numbers/letters, which might read "11848-69-62, CV16V, Sep 10-49", but also might not.
Higher resolution pics at https://www.dropbox.com/sh/eu39pn6h86298xo/c_djAkTJCj?lst