This is a 1953 watch in yellow gold with silver dial with gold applied arabic number hour markers. It is 40MM long and 25mm wide. It as a 10AK 15 jewel movement with a triangle date code. Based on my research this might b e a Minute Man D.
This is the add I found for the Minute Man D, vintage-bulova-watch-ads
There are a couple of 1953 watches in the database that are like yours that have the ID Ambassador. It will give you an idea what it would have looked like with the original dial.
http://www.mybulova.com/watches/1953-ambassador-7106
http://www.mybulova.com/watches/1953-ambassador-7016
http://www.mybulova.com/watches/1953-ambassador-7231
Hi JimDon, I'm a little puzzled by this one at present. Case shape appears to be a match to watches previously ID'ed as Ambassador, although ad referenced by Kathy seems to show a difference in lugs. Face, back and movement aren't a match tho. Date gap between movement and case and jewel count says movement swap. Watch may be a marriage.
Non-conforming based on date difference. Still looking.
In reply to Hi JimDon, I'm a little by neetstuf-4-u
As Kathy points out, we have three watches in the dB with this case, all ID'd as Ambassadors. Interestingly all three have a dial different than all the adverts we have. The panel generally agreed that, at best, the ID was tentative on each of them. I'm still not sure this case even matches the advert, the lugs are different. Having said all that there is the movement question. I think this watch has to be Non-Conforming for that reason alone.