The Vintage Wrist Watch Company has dated this piece to the 1920s.
The watch has a stem-winding movement which is working nicely. The movement is all protected by an inner hinged cover.
The watch measures 50mm diameter excluding the winding stem and the loop. The case is gold plated and was made by Manufacture Genevoise de Boites de Montres (MGBM).
There is some rubbing around the edges. Other than that, the front is in good condition while there is some unevenness to the back.

The winding crown pushes in to open the front cover.
Inside, there is an acrylic lens which is in good condition.
The white dial has blued steel hands, a subsidiary seconds dial and an outer minute track. There are several short hairline cracks although they are very faint.
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