Opus Antiques has dated this piece to the 19th Century.
Firstly it's made of yew wood, a very prized wood. It is dated 1882, this has been inlaid into the wood.
There are also stars, hearts and diamonds all love token symbols.

It's a really striking piece.
Probably originating from Middleton in Teesdale, its right by the river Tees, renowned for its fishing, hence the fish inlay.
The sheath measures 24.5cm l x 6cm w at the widest point.
Opus Antiques has dated this piece to the 19th Century.
Antique treen, boxes & decorative georgian items
You can view the stock and full dealer information on the Opus Antiques Profile Page