The Vintage Wrist Watch Company has dated this piece to the 1910s.
The watch has a stem-winding movement which is working nicely.
The movement is protected by an inner hinged which has some unevenness and marking.

The watch measures 50mm diameter excluding the winding stem and the loop. The case is silver and there are hallmarks inside the two case backs for London (import mark) 1911 together with the early Omega logo and with an importer's mark SA for Selling Agency, watch importers,. The front and side of the case are in good condition, just a couple of small “dings”. The hinged case back has some unevenness.

The acrylic lens is in lovely condition.
The dial is signed with the name of the original retailer, Mason & Son, Middlesbrough. Handsome blued steel hands, a subsidiary seconds dial and an outer minute track.
The watch comes in a new presentation box.
The Vintage Wrist Watch Company has dated this piece to the 1910s.
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