The Vintage Wrist Watch Company has dated this piece to the 1910s.
The watch has a 15-jewel stem-winding movement which is working nicely. The movement is protected by an inner hinged cover which has some surface scratching.
The watch measures 50mm diameter excluding the winding stem and the loop. The case is gold plated and was made by the Birmingham based watch case maker Aaron Dennison. Dennisons made cases for various watch manufacturers. The front of the case has some unevenness.

The winding crown pushes in to open the front cover. Inside, there is an acrylic lens which is in lovely condition.
The watch comes in a new presentation box.
The Vintage Wrist Watch Company has dated this piece to the 1910s.
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