I did a walk-through in a field where a town used to be located. I was hoping to spot a coin on the surface, but most of what I saw was just glass and crockery. I did find 2 small buttons. They are both about the same size (dime size), and almost pure white. First I thought plastic, but plastic didn't exist when this town did. Closer inspection looks like they are made from white marble or something similar. Has anyone ever seen anything like these before?