Wanzl 14mm "DR" signature

Hello,
Recently I found this 14mm Wanzl, but can not find any information about producer. Someone know which one marked as “DR”? Thanks for any information.

anemon

Welcome in the forum.

Reading in the book „ Österreichische Militäirpatronen” from J. Mötz,
The manufacturer “DR” (Monogram) is still unknown.

Rgds

Sad to hear, but anyway thanks for information about book!

anemon