This is a copy of a set of BC-41 Knucks. This is what I found on the web.
The BC-41 Knucks
Moving forward into the Second War, this is a reproduction of the BC 41 knuckleduster.
Assumed to be a companion to the famous knuckle knife of the same name, it suffers from the same lack of information that surrounds the knife.
No one knows for certain but the belief is that BC 41, stamped both on knives and knucks, designated; British Commandos, 1941.
These are small and light but still with nice roomy finger stalls.
Available with points - or not.