For one thing, the silver cords do not belong to it-it should have a black leather strap.
"Much that once was, is lost. For none now live who remember it."
I do not think the RZM tag is correct, either.
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Mr Mint can say for sure.
These Prinz Heinrich and or Elbsegler Muetzen were made prior to 1933, and since 1945, and are made today.
That is most assuredly not my thumb, either, nor my cap at all.
I do have an RZM tag tick.
I agree with F-B, not a good DAF cap.
NEC SOLI CEDIT
Isn't the grey leather sweat band post war? NH