The Vintage Wrist Watch Company has dated this piece to the 1930s.
The watch measures 52mm diameter excluding the winding stem and the loop. The case is gold plated and was made by the Keystone Watch Case Company. The case has light surface marking from use and some mild bruising to the back but overall it is in nice condition for a 1930s watch.

The watch glass is in nice condition with only minor marking.
The dial is in nice condition with original blued steel hands, a subsidiary seconds dial and an outer minute track.
The watch comes in a new presentation box.
The Vintage Wrist Watch Company has dated this piece to the 1930s.
Specialists in antique and vintage wrist watches and pocket watches
You can view the stock and full dealer information on the The Vintage Wrist Watch Company Profile Page