Used to be common in many States. Of course you would have to be as old as me to remember them. Way, way back when I was a kid I had relatives in Missouri. When we visited them they would give me some of those tax tokens. As a little kid I thought I was now rich. In Missouri they had plastic and metal ones. Most of the metal ones were for $0.005 and the plastic ones were for $0.001 each. Some of the metal ones had hole in the center. Many of the plastic ones were either green or red and I have no idea why. I've stil got a roll of them. Used to have hundreds of them but as a kid, gave most away.
The purpose was that if you purchased something for $1.00 and the sales tax was .01%, the only way to pay that amount would be in what was called MILLS or TAX TOKENS.
Imagine today in most places a sales tax that would require something as small as $0.0001
