Syntax, The Rolex Oyster cases are unbeatable!! The screw-down pushers were an excellent addition! (a lot of gaskets in that case :) Always great pictures from you:) I think that watch still has the Valjoux 72. I am lucky to have the model with a Valjoux 72C. "C" designating addition of triple calender feature. Early 1950's.
Seikosha, Your Diver is a "high-beat" All very cool stuff! They must be very hard to find.
Donjr, There are SO MANY vintage watches for sale at very reasonable prices. Just look at Epay. Be selective. You want a watch with the original dial finish. (not re-done) Like a Hamilton manual wind from the 1940's, as example. Excellent quality!! And It'll run forever. Enjoy