Yes, Bruno Hahn.
Definitely worth pursuing!!
This is indeed a crudely done signature, but therefore exciting to find it on paper in a file!
Please note that the signature is on the reverse of the scabbard.
I've seen many scribbles on the reverse of scabbards (ALSO SS dagger scabbards), usually initials...
So this guy wanted to be a little more elaborate....
By the way, great dagger!!!!

Jerry