Classic Enfield Martini-Henry series rifle sling in White leather.
Manufacturer marked with the British Proof Arrow.
This was the official issue sling for British and Commonwealth forces from the 1800's until it was superseded by the web sling in the latter part of WW2.
46 1/2 inches long.
1 3/8 wide.
Complete with running leather keeper loop and thronged for butt attachment.