I believe we have an early early ladies 18K model.
I have seen at least one other early solid gold Bulovas with the some non-Bulova stamped case with that same M marking.
I believe this to be a "6720". Date is based off the add as we are pre serialized movements and cases.
Although the dial isn't a match... it numbers are a spot on match for another advertised dial in the same year.
A very nice early 6720. Congrats!
No worries about the dial. Bulova had 16 variants in those days and you can only make one illustration.......
The case is made by MP. I have seen about 7 of these early 6720’s now. Yours is special though having these two flowers at the back. Very nice.
In reply to This ad was from 1923 in the… by plainsmen
We also have this 1923 Saturday Evening Post advert showing the same watch as a 6722, not helping the cause.
I would be careful with the "Viola" name. I am afraid this is an invention of a single jeweler. Unless many jewelers use this name, I consider the name as confirmed. Bulova introduced names in a newspaper campaign in December 1924 where this model was called Norma. Before that date, Bulova NEVER used names. Since this watch is from before 1924, it went by the name 6720 at that time.