The Vintage Wrist Watch Company has dated this piece to the 1910s.
The chain measures 34cm long including the T-bar and the clasp. The T-bar is hallmarked for 1889 while the later clasp is hallmarked for 1917. Each of graduated links has the lion silver mark.
The swivel is hallmarked for 1900 and it has both a carnelian and a heliotrope (sometimes known as bloodstone). Both stones have surface marks.
This is a heavy duty chain, weighing in at 64.7g.
The Vintage Wrist Watch Company has dated this piece to the 1910s.
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