The Vintage Wrist Watch Company has dated this piece to the 1940s.
The watch has a 17-jewel hand-winding movement, calibre 12.68Z, which is working nicely. The movement is fully signed and it has the serial number 6,336,483 which dates it back to 1942.
The watch measures 35mm diameter excluding the winding crown and the lugs.
The inside of the case back is signed with the Longines logo.

The lens is in good condition.
The signed dial has been professionally re-finished at some stage. It has darkened a little with age but looks good. Original hands, a subsidiary seconds dial and outer minute markers.
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 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