I wouldn't worry too much about the knuckle knife.
They seem to have been made by more than one company in WW2.
Especially in the private purchase versions.
I don't think they all had the BC41 mark.
Pattern goes back to WW1.
No manufacturer's mark?
| Brian W Edginton|
I am an old bloke. Sometimes I forget things that happened. Sometimes, I remember things that didn't.
When I post, you are getting the best I have on the day. Be kind.