The Vintage Wrist Watch Company has dated this piece to the 1910s.
The watch has a Swiss Tavannes hand-winding movement which is working nicely.

The watch measures 32mm diameter excluding the winding crown and the fixed wire lugs. The case is silver and there are hallmarks inside the case back for Birmingham 1914 with a case maker’s mark for Aaron Dennison, a Birmingham based case maker and supplier to various watch makers.

The case is in good condition for such an early piece, just a little unevenness to the hinged case back but nothing too serious.
The watch glass has light marking but again, very acceptable.
The dial is in lovely condition.
When winding the movement, the crown needs to be pushed in very slightly.
A new leather strap has been fitted.
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