Nice Signals officer, the maker is Oskar Hertlein I think, I am sure "Stonemint" will jump in and say for sure...
Very nice addition to your museum.
Collect ROA, Cossack, Schuma and other WW2 Volunteer militaria.
"Be Humble and kind, for you may find that it was Odin you entertained"
A very nice cap Steve, in great condition.
What a nice hat