Bulova ladies' Art Deco wristwatch, circa 1928, case serial approximately 8317240, manual-wind movement, ornate cushion/tonneau case, 10K gold-filled.  This is not a pristine example, but one that was clearly worn in the mid1900s.  

The case is quite distinctive. It has:
I have not tried to open the case or clean the watch.  I have wound it and it is working--not sure how accurately.

Happy to answer any questions or provide more photos.