Greetings, nice little thing- agree overall, late 1930s from the style of the case, Bonklip 1940s.
Those slanted radial numerals are cute.
I agree on the numerals and the case has swivel lugs. I've been trying to find a men's watch with swivel lugs for years now, preferably a 1930s clamshell, but no success so far. I couldn't let this slip.