The Vintage Wrist Watch Company has dated this piece to the 1920s.
The watch has a Swiss 15-jewel stem-winding movement which is working nicely. The movement has been identified as by Revue. It is all protected by an inner hinged cover.

The watch measures 49mm diameter excluding the winding stem and the loop. The case is silver and there are hallmarks inside both of the case backs for Birmingham 1926, with a maker’s mark for the English case maker Aaron Dennison… precious metal cases were often made in the UK to avoid expensive import duties. The case is in lovely condition.
The watch comes in a Dennison Watch Case Company cardboard box.
The Vintage Wrist Watch Company has dated this piece to the 1920s.
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