Don't know ,
I have asked a friend to look.
In adendum, (much later)
Here is his reply.
Thom, thanks for asking. You asked the right guy. I don't know if I every told you, but I am a major collector of German WW-Two and German WW-One medals, badges, pins, armbands, and so on. I have a large collections.
The metal pin and the two embroidered deaths head skulls are not SS (a German contraction for "Schutzstaffel" meaning protection or security division). The items were actually worn by soldiers in armored vehicles, including tanks, self-propelled guns, and any other vehicles within an armored unit.
If you look closely at the embroidered deaths head skulls, you can see remnants of the black wool backing. Someone apparently carefully cut the embroidered skuls away from the black wool. And that is a shame, because it really has destroyed the major part of collector value. The metal pin looks very nice, and it appears to be a "first" version of the pin.
Lee