The Vintage Wrist Watch Company has dated this piece to the 1920s.
Each chain measures 20cm long including the T-bar and the clasp. The T-bar is hallmarked for 1929 with a maker’s mark for Herbert Bushell & Son. The two clasps also carry the same marks. Each of the links bears the lion silver mark.

The chain comes with a silver stamp case hallmarked for Chester 1904. Some unevenness to the front and back but still a nice item. There are ornate initials engraved into the back of the case.
Total weight 39g.
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