Movement: Bulova Watch Co. 15 Jewels Adjusted 10AN (circle date symbol)1934 - Inside Case Back: BULOVA QUALITY 4026183 (lots of jewelers marks from service history) - Outside Case Back: 10K Gold Filled BULOVA (on upper edge of case back) 338154 - Dial: White dial w/ black printed outer minute and sub second track, raised gilt BULOVA and hash marks. Gilt Index hands. - Case measurements: 33mm lug tip to lug tip by 25mm at widest point of steps (not counting crown) - Crystal measurements: 23.5mm x 15.3mm rectangular, measured in watch at front where bezel meets raised part of crystal. - Lug gap: 12.2mm at lug holes. - 10K Gold Filled, with BULOVA on edge of case. Note no bell-shaped symbol.

I knew I was thinking 10 k gold filled for a reason. ... and it's got that BULOVA signature along the case back edge like Plains' example. I'll photo and add. The small "shield shaped" insignia which occurs adjacent to Plains' example is absent on this watch.
This is an Ambassador model.
Also came in white gold and two tone yellow/white gold case.
Yummy. Thatsa nice watch!! You been holding out on us Will?? Just keep'em comming cause I love to look at them and drool.
Daca, is there advert on this one?? I see a lot of these on the bay and have stayed away cause I didn't think we could ID it.
In reply to Yummy. Thatsa nice watch!! by JP
JP If you take the gold filled into account, I don't think there's an ad for that- but what that means on the ID? I don't know.
1934 Ad for gold filled:

1935 ad for gold filled:

We see a Sears 1935 ad Natural Gold plate for same watch. And another 1935 Gold Filled , both in 15 jewels. By 1936 there are ads for a 17 jewel version, but only in natural gold plate.
This Ambassador (in gold fill or gold plate) dissapears from the ads after 1937.
I have the White Gold version and IMO this is an Ambassador and I vote as such.
I'd be happy with an Ambassador call based on the unique case design.
1934 ad here for the dial, but diffent colour so maybe Will's is a re-dial? Looking at the un-numbered sub-dial I would say it is.
EDIT: I would say the inner case seven-digit number is the case s/n, as most of the s/n's, if not all are seven digits, so1934 case s/n.

'AMBASSADOR'
The subject Dial style is shown and found in several different Models from the early to mid/late 1930's.
Agreed, Ambassador.