Hey Jerin,
Wayne has the same timepiece up, as a '48 "unknown..." I believe this is either a "Commodore," or perhaps a "Banker B" model? I commented on the one Shawn posted a couple of weeks ago, thinking his was the "Banker B" (?) however noone seems sure at this point? And Shawn has since updated it from a Banker, to now... a Commodore! (Not sure WHY?)
SEE: http://www.mybulova.com/watches/1946-commodore-1003
I would think it odd that any "Banker" design wouldn't be a "plano" applied gold numeral, etc. vs. pink gold with flashier dials, as on this watch (especially as the case was engraved) or the other dial in Rose Gold variant (photos) I posted on Shawn's thread as a third example, Philip restored/sold in October, 2010. But NOT ONLY are there several Banker (and Commodore) A, B, C, D, etc. models... BUT... there are even A+ models from as tight as 1- 2 year time frames IF/WHEN they were hot sellers! You see this with the 50s Ambassadors, Senators, etc. (Not only A, B, Cs+ but a few+ years later, the same occurance!)
So until we find a Jeweler's catalog illustrating say models A- D for the "Commodore," or A & B for that year/s of "Banker..." I for instance have a (an often) confusing array of 200 + overlapping (men's alone) crystals, 300+ model names, and the same names were routinely REUSED from decade to decade (model names that sold well previously) generally in 2- 4+ shapes and sizes... For instance there are several Banker models, as one would expect! And of course the same approach was used by the competition, and they ALL COPIED one another's BEST SELLER model names!!
However, again to me... Banker sounds "Conservative," and Commodore sounds either "Military," or "more "Flamboyant!!?"And an ENGRAVED case that also came in "pink gold" (with two tone and harder to read Romanesque copper dial option) seems more dapper, if not "LOUD," I would think????
BEST :-) Scott