I am not sure if this is a 1930 or 1940 model. the movement is a 6AE 17 jewel marked with an omega symbol. the case is 10k rolled gold plate and has the serial number 0187756. inside it is marked Bulova ,Fifth Ave. New York. the case is engraved around the sides. the crystal is glass.
It could be a 1930 model or a 1937 movement in a 1940 case . ?
Looking through the db for the 6AE movement it gives the manufacture dates between 30 and 37.
the watch is in beautiful condition and seems to be running very well and keeping time
I would appriciate other members opinions on this little gem please