It is the only one I know of, too. There are at least three pieces of world currency with squirrels, and at least one art medal too...I am still chasing the medal and one of the currency issues
:) Thanks! As a diehard fan of squirrels, when I saw they existed I had to hunt one of them down for sure. I like your term, too...very cool! The neat thing about that is that I didn't even plan that, it just kind of happened that way!