Yes, it is a rainbow toned coin but it doesn't look right.
Do you live in a cold climate area? If so, do people commonly use salt or ice melt? If not then maybe the coin came into contact with motor oil or antifreeze/coolant.
Do you live in a cold climate area? If so, do people commonly use salt or ice melt? If not then maybe the coin came into contact with motor oil or antifreeze/coolant.






















