The Vintage Wrist Watch Company has dated this piece to the 1910s.
There is a slight indentation to the back but other than that it is in good condition. The button on the stem pushes in to open the case, revealing one requisite for half sovereigns and one for full sovereigns.

The holder is hallmarked for Chester 1913, Walker & Hall, and the sovereign sections are hallmarked for 1914 (the sovereign sections were often bought in from specialist companies).
The holder measures 52mm wide, 28mm high excluding the stem and loop and 15mm thick. Total weight 30.4g.
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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