Kostas, the BO mask with the brass plate (Does it say "Lucas Maxilite" or something?) Are a civilian hood. I'm not sure but looking at the inside of yours, I wonder if it's for a car headlamp. The WD motorcycle hoods fit just the same as a normal rim would and usually have the extra little round window. Ron
Kostas, this is an old shot of the inside of a blackout mask - I think it is original.
The glass holder is a reproduction I made to replace a very rusty original.
The screws and nuts are not original either.