NOTE:  I am a watch enthusiast, but not an expert by any means.  I am happy to answer any and all questions, and am describing the watch movement as well as I can.

WALTHAM  Grade No.310 Model 1900 3/0S 7J Small Pocket Watch Movement w/white enamel dial and blue steel hands. Approximate production date 1914.

As found condition, balance wheel spins well but doesn't want to tick over, nice dial