Case looks to be plated brass, no markings on case back or dial other than 'Bulova'. Strongly resembles some of the military models aleady in the database, but has quite a different dial, and no caseback markings suggesting it's not an issued model.
Watch runs, and keeps good time. Movement does not hack.
The caseback doesn't seem to want to come off, despite my best attempts. if removal is necessary for identification then I shall persevere further.
edit: I've had to guess the manufacture year, as I can't save the watch without one. I have no idea whether my guess is anywhere near true though.
The blurb states: "Watches identical to these were issued by the U.S. Army Air Force to our fliers during the war".
Even thought the subject does not exactly match the watch in the ad, it takes no great leap of imagination to guess that this is another war surplus with a new case back.
It's a great ad proving a seperate matter but has no bearing on the subject.
http://www.mybulova.com/watches/1945-military-issue-2358
The Case, Dial and Movement (jewel count) all differ.