The Vintage Wrist Watch Company has dated this piece to the 1930s.
The watch has a Swiss 15-jewel hand-winding movement which is working nicely. The movement has been identified as by Cyma. It is protected by an inner cover.
The watch measures 29mm wide excluding the winding crown, and 29mm high excluding the lugs.
Schwob Frères & Co was a Swiss watch trading company that established the well-known Cyma watch brand around 1900.

The inside of the case back also has the mark for François Borgel. He was a very successful inventor and business man, and his company became one of the most important watch case manufacturers of its time. He advertised his screw watch case as "imperméable", which means that he considered his screw case to be waterproof.

We also have a British patent number, 385509, which relates to a 1932 patent owned by the Taubert family, again relating to the water proof design of the case.
Despite the above patents and designs, the watch should not be treated as being waterproof, it should be kept away from water and moisture.

The case is in lovely condition, as is the lens.
The signed dial is in super condition with original hands, a subsidiary seconds dial and outer minute track.
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 1930s.
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