The Vintage Wrist Watch Company has dated this piece to the 1920s.
The watch has a Swiss stem-winding movement which is working nicely. The movement is protected by an inner disc which has various details of the watch and medals.

The watch measures 49mm diameter excluding the winding stem and the loop. The case is nickel plated. There is light rubbing in places, and gentle unevenness to the patterned case back. A vacant cartouche to the back of the watch.

The glass lens is in good condition.
The dial is signed Siro, a brand name registered by the Oris Watch Company in 1925.
The watch comes in a new presentation 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