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

The watch measures 50mm diameter excluding the winding stem and the loop. The case is gold plated. The front of the case is in good condition and there are a few little indentations and a 1cm scratch to the back.

The watch glass is in good condition with just a couple of minor nibbles to the bevelled edge.
The white enamel dial has blued steel hands, a subsidiary seconds dial and an outer minute track. There are a couple of short faint hairline cracks towards the bottom of the dial but they are barely visible to the naked eye.
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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