Primarily Petroliana Shop Talk Forums Shop Talk Petroliana Forums General Petroliana Discussion What is this Texaco "Dime"?

I came across this item and don't know what it is. It is slightly smaller than a dime. There is a Texaco logo on one side, the other side is blank, the edge is smooth. I'd guess it might be an insert from a button, but honestly don't know for sure. I'd like to know what it actually is.