Danish Schalburg Corps ("Korpset") hat badge. Silver bullion on black backing, bearing oxidization; judging by the condition of the reverse, it may have actually been worn and later removed from hat (the German styled "Allgemeine SS" black hat). Reference: Littlejohn vol. 1 pg. 103-104.
These patches, when encountered, are almost always of the machine "BeVo" weave - or produced on rayon sheets - and unused (similar to most Waffen-SS foreign volunteer armshields); our evaluation is that this piece of bullion make is the original manufacture, and hence rare.