This 10k GF watch has two diamonds at the top and bottom of the bezel. Two similar watches are listed on site.
The advertisement I posted above appeared with the above mentioned 1937 non-conforming model. The ad shows a Roman numeral dial with a 21J movement and a whopping $57.50.
My watch has the Arabic dial with a less expensive 17J movement. I suggest that Bulova made my watch as a more ecconomical version of the watch in the ad.
I would also like to suggest that this watch be called (for now-until we have a new ad) an "Unknown Variant" from 1937 or early 1938.