The Vintage Wrist Watch Company has dated this piece to the 1860s.
The chain measures 35cm long including the T-bar and the clasp. Each of the graduated links has the lion silver mark, although the marks are quite rubbed. The T-bar is hallmarked for 1866 and the clasp is a little later, hallmarked for 1888.

The fob is silver, hallmarked for 1902, and it has rose gold wash detail to the front. The back has a 1902 inscription for 1st prize for fielding, AUCC. The fob measures 31mm wide and 42mm high.
The chain and fob have a nice weight at just over 80g.
The chain and fob will come in a new presentation box.
The Vintage Wrist Watch Company has dated this piece to the 1860s.
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