Heer Para Badge: Opinions and thoughts on condition please

[Jagerschnapps1]

Hello this is my first post here.
This was in a groups of medals that I have that were all caked with a white residue. I tried everything to remove it until someone suggested it was brasso. Tried some brasso and this is what was remained of the finish. Of course the other badges (not as rare) faired better. This one is of a zinc construction. What are your thoughts as to manufacturer and value in the condition it is in.
Thanks

[Antonio Scapini]

Looks like a good Juncker zinc badge. Too bad for the eagle's head!

[Thomas Durante]

AGREED, an original Juncker with a missing chunk out of the head.

Tom