Not a fantasy piece.
It's an Opferring membership pin. Apparently this type was for the Opferring of Gau Koblenz-Trier in particular (at least the secondary sources usually identify it as such).
I cannot comment on authenticity or value.
Looks fine to me. A fairly scarce little pin-they bring a couple hundred dollars when you can find them. Well found!
"Much that once was, is lost. For none now live who remember it."
many thanks for your help !
Nice one Didier, same as mine.
many thanks !!