14K white gold with 20 round single cut diamond (total weight 0.10 ct.). Watch band is solid white gold with an art deco design. Based on current research, watch box is turquoise velvet Bulova Empress Fifth Avenue with coronet logo on left side.
Purchased 1960, and was likely a resale from an estate, so could be much earlier. A Bulova jeweler said likely prior to 1948. With case labeled Fifth avenue, manufacture year is likely between 1927 and 1960 when it was purchased.
Could you please load a photo of the movement and the inside of the case back? It it difficult to match to a catalog or and avert with a little more information. Thank you.
It's often tricky to date a solid gold watch due to the lack of a date code stamp. Having a photo of the movement will hopefully show a date code, which can then put us in the ballpark of a year.
Can you post a pic of the back with the lugs please. I don't think this is a match because of the lugs and band but it is the closest I could find. From the 1957 linebook and didn't find anything else like it up to 1960.

In reply to Can you post a pic of the… by Kathy L.
Image of back and lugs has been uploaded.
NIce lonebook fins Kathy, Whilst niot the same watch I think it's fair to say that the subject watch is going to be part of the Marquise range.
Here ius a close up of the above watch case. Both the "M" and subject watch have the matching 20 diamonds.

I believe that you are correct in the watch case and face matching the Marquise "M". Because of the design of the band, the lugs are completely covered. I am wondering if someone had custom work to add the solid gold band.
In reply to I believe that you are… by lampehan
Yes that is very feasible.
I have to agree it looks to me like a modified Marquise M. You can clearly see the lug welds are irregular.
Agree. Watch appears to be a jeweler modified Marquise M, date to be determined by movement date code.