Here's a promotional item I've never heard of, or seen anywhere.
It's a 1969 "Win With Chrysler" lucite paperweight encasing $100 in singles. It's crazy, and probably sat on some dealers desk at a high-profile Chrysler-Dodge-Plymouth locale.
It isn't a fake, because it ties in with a smaller-scale keychain promotion around the same time that uses the identical font and colors. I have no other info on this, so feel free to make up a great story and pass it on!