The Vintage Wrist Watch Company has dated this piece to the 1940s.
The movement is signed Cyma, Tavannes, Switzerland, 17 Jewels together with a serial number.

The watch measures 33mm diameter excluding the winding crown and the lugs. The case is plated and the condition is good for such an early piece with just general minor marks. The snap-on case back is stainless steel and it has the Cyma Watch Co stamp inside.

The lens is in good condition.
The dial is signed Cyma, Cymaflex, Swiss Made. There is light marking to the dial but all very acceptable for its age.
A new black leather strap has been fitted.
Price includes free worldwide postage.
The Vintage Wrist Watch Company has dated this piece to the 1940s.
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