Is there any market at all for these oddities?
Things like quarters with the designs colored in or with Betty Boop painted on one side.
Or miniature (tin?) coins that resemble real old gold coins.
People who buy coins don’t buy them. They buy coins not trinkets.
If they bother to advertize them in the paper, someone is buying them, and so there is a market for them.
Look on ebay - there is a market for everything.