The Vintage Wrist Watch Company has dated this piece to the 1920s.
The watch has a Swiss stem-winding movement which is working nicely.
The watch measures 51mm diameter excluding the stem and the loop.

The watch glass has light surface marking but is very acceptable.
The white enamel dial is signed The Reliable ZNF. It is in lovely condition with original blued steel hands.
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
You can view the stock and full dealer information on the The Vintage Wrist Watch Company Profile Page