The Vintage Wrist Watch Company has dated this piece to the 1940s.
The watch has a Revue 15-jewel stem-winding movement which is working nicely.
The watch measures 53mm diameter excluding the winding stem and the loop.

Both the bezel and case back are screw fitting. The back of the watch has the military arrow, or pheon, together with Patt 300 which refers to watches made for the British Royal Navy, probably for the wireless transfer office. The Patt 301 was used for torpedo control on submarines.

The acrylic lens has light marking but is very acceptable.
The dial is in good condition with original blued steel hands, a subsidiary seconds dial and outer minute markers.
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