The Vintage Wrist Watch Company has dated this piece to the 1910s.
The movement is protected by an inner hinged cover.

The watch measures 52mm diameter excluding the winding stem and the loop. The case is silver and there are hallmarks inside both of the case backs for London (import mark), 1918 together with the mark for London based watch case importers Willis & Hill. The case has a few minor marks and some unevenness to the case back.

The watch glass has a fairly light 1cm scratch but otherwise looks good.
The enamel dial is signed John Russel, London - this would have been the original retailer of the watch. There is minor damage to the edge of the dial by number 2 but it is not very noticeable to the naked eye.. Blued steel hands (initially set by way of the pin set mechanism), a chronograph hand (stopped and started with the sliding button on the side of the watch), and an outer minute / second track.
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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