I love getting back the occasional world coin in my change. When I get any Mexican currency I put it aside. Then when I go eat Mexican food, I leave them along with the tip. Most of the coins I find are demonized, but I've had several waiters ask, where'd you get this old Mexican money. Once a few years back I got a crazy good deal on some 1/20 ounce libertads. I left a few of those with my regular tip to exceptionally good waiters/waitresses at my local restaurante.
That's what you got out of that? It's "demonetized". Auto fill is a female dog. But don't worry, there's still plenty of time to edit! I'll even delete all this and put a in it's stead.