The Vintage Wrist Watch Company has dated this piece to the 1920s.
The watch has a Swiss 15-jewel hand-winding movement which is working nicely. The movement has been identified as by Electa.
The watch measures 35mm diameter excluding the winding crown and the fixed wire lugs. The case is hallmarked for Chester 1925 with a sponsor’s mark for Rotherham & Sons. There is also the mark for François Borgel.
He advertised his screw watch case, such as this example, as "imperméable", which means that he considered his screw case to be waterproof . Early adopters of the Borgel screw case included Longines and IWC. After François Borgel’s death in 1912, the business was carried on by his daughter Louisa. As with any vintage watch, however, we would not recommend that it is treated as still being waterproof or even water protected.

The case is in good condition, just a small bruise to the side but not too serious at all.
The glass lens has light marking but is very acceptable.
The dial has a blue number 12, blued steel hands and a subsidiary seconds dial. There is a short faint hairline between 10 and 11 but quite difficult to see with the naked eye.
A new leather strap has been fitted.
The watch comes in a new presentation box.
The Vintage Wrist Watch Company has dated this piece to the 1920s.
Specialists in antique and vintage wrist watches and pocket watches
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