Good eye! I found it on line at an airport. No one was looking for anything they dropped, so I stepped on it and pretended to tie my shoe. It was right before getting off the line, so no one was really in front of me anymore to ask. I actually have a bunch of foreign coins as well, but I'd never be able to practically convert them. I also have some sterling silver and gold stuff I found, but I keep that separate. I think one piece has lots of small diamonds.