The Vintage Wrist Watch Company has dated this piece to the 1940s.
The movement is signed Helbros Watch Co.

The watch measures 30mm diameter excluding the winding crown and the lugs. In line with 1940s fashions, this watch is on the small side for a gent's watch so it would suit a man with a slimmer wrist or it could be worn by a lady. The case is plated and there is some marking and wear, although overall the condition is commensurate with its age. The snap-on case back is stainless steel; it has some scratches.

The lens is in good condition.
The dial is marked Waterproof, AntiMagnetic, Swiss. As with any vintage watch, it should not be treated as being waterproof. The dial is in good condition with just minor marks.
A new black leather strap has been fitted.
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