Gold Coins?

I was just at the bank and picked up several of the "gold" dollar coins in preparation for St. Patrick's Day and was reminded of this funny little incident:

Every year our kids build a leprechaun trap (a box painted green with lots of sparkly stickers, rainbows, and pots of gold drawn on it) and set it out to try to catch a leprechaun and his/her gold. The first year they came up with the idea, they were so cute about it and so sure that they would catch one that we couldn't disappoint them. So, we got a few golden dollar coins and put them in the trap while they were out. Ever since it has been a tradition. The only down side is that it leaves us with a lot of dollar coins lying around, which are not the most convenient to use.

Well, Chris filled his pockets with a handful of some of the leftover coins and made an effort to use them over the course of a few days. After making several small purchases with them, he hands one more cashier several coins. She looks at them for a minute and says, "Um . . . these aren't actually real money." Chris takes a quick look, thinking that she's probably just never seen a gold dollar before, but instead is rather startled by what he sees:

You see, the previous weekend he took the boys to Chuck E. Cheese, but they got tired before they used all their tokens. So, he put them in his pocket, mixing them in with the real money. The question is how many tokens did he spend at the other stores? He didn't know how many of either coin he started with, so we'll never know.