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.
I've tried a caseback tool, and the classic ball of duck tape and have had no luck with either.
I take it identification is not possible without a look at the movement then?
Any tips on loosening the caseback? I'm loathe to do anything like soak it in WD-40 for fear of destroying the watch.
However you try to remove the back just be sure not to apply too much pressure to the lugs causing them to bend or even snap off. Keep in mind that the longer the wrench the more pressure you will apply with less effort so be very careful. If you do use wd-40 I would use a q-tip to use as little as possible. Let is sit over night or so to give it a chance to penetrate.
*** Use your best judgement when deciding to try any of the suggestions offered here. I'm not a watchmaker and I didn't even stay at a Holiday Inn Express last night.