The Vintage Wrist Watch Company has dated this piece to the 1920s.
The movement is stamped with a patent date of 24 May 1904 which relates to stem-winding and setting mechanism (based on a 1903 patent granted to Sandoz).

The watch measures 31mm wide excluding the winding crown and 31mm high excluding the lugs … a good size for a 1920s cushion case. The case is the gold plated Moon model by the English watch case maker Aaron Dennison. The case is in very good condition.

The lens has minor marking but is very acceptable.
The dial is in lovely condition and has handsome blued steel hands, a subsidiary seconds dial and an outer minute track.
A new black leather strap has been fitted.
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