Thanks for the additional photos. Looks like an early pre-regulation, pre-RZM variant to me.
Are there any markings on either the metal or leather? That is a rare hanger in my opinion.
Very unusual to find it on any dagger, especially a 1938. I like it a lot!
But still would like better photos.
I know sounds like it's asking alot but you don't see these everyday.
-wagner-