This is a beautiful Nahkampfspange in bronze / Close Combat Clasp.
It’s dark “chocolate” bronze color is for the most part still present, which is quite rare to find like this!.
Maker marked on the back with the clasps maker’s initials JFS (Josef Feix & Sohne from Gablonz an der Neisse). Also the name of the designers is present: F.E.C. WIlhelm Ernst Peekhaus from Berlin .
It would be very hard to upgrade this amazing clasp!