Never defined, as far as I know.
A classic piece from a classic movie...but what is it?
Suggestions I've heard are a Hungarian medal which belonged to Lugosi or a piece from the Universal prop dept.
I'd love to figure out what it actually is, or at the very least get some much better reference pics in order to recreate the piece.
RPF prop detectives...can we track this long-elusive prop down? Who's up for the challenge?