The Vintage Wrist Watch Company has dated this piece to the 1920s.
The watch has a stem-winding movement, stamped English Made, which is working nicely. The movement is protected by an inner hinged cover.
The watch itself measures 50mm diameter excluding the winding stem and the loop. The case is gold plated and was probably made by the England based watch case maker Aaron Dennison.

The glass is in good condition too.
The white enamel dial is signed ‘Mason & Son, Middlesborough’ (note Middlesborough rather than Middlesbrough). Mason & Son was a watchmaker and jeweller with premises in Corporation Road, Middlesbrough. The company was owned by Edmund Heppell Mason and Charles Allan Mason and ceased trading in 1927. The dial is in good condition with just a small chip to the centre of the subsidiary seconds dial.
PRICE INCLUDES WORLDWIDE POSTAGE
The Vintage Wrist Watch Company has dated this piece to the 1920s.
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