The Vintage Wrist Watch Company has dated this piece to the 1940s.
The watch has a good quality hand-winding movement, signed Mimo Fab Suisse, which is working nicely.
The Graef family went on to buy, and subsequently rescue, the watch brand Girard Perregaux

This particular watch measures 25mm wide excluding the winding crown, and 31mm high. Originally designed as a man's watch, it could be worn by either a lady or a man. The case is stainless steel and it is in lovely condition, as is the slightly convex lens.

The signed dial is in super original condition with original hands, a small subsidiary seconds dial and outer minute markers.
The watch retains its original suede strap.
The watch comes in a new presentation box.
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