1940 Bulova unknown, 17J 10AX movement with a Omega date code, 10K Yellow RGP bezel, Stainless caseback, Satin White dial with applied Gold numbers and hands, Blued sweep seconds hand, B/R 1/20th 12K Gold filled bracelet band.
Nice old watch, running great but does have some dial spotting.
The closest I can find in the ad's is a 1938 Bulova Buckingham, but the lugs look different. There is also the Apollo & Kenmore, but they both have sub-seconds dials, and this is not a Watertite model.
**Update** I guess I didn't search enough! Practitioner as shown in this 1942-43 ad find from the great ad hunter... Plainsmen...Thanks for finding it Mark!