I have seen some of these on
ebay before, not sure of the exact dates. They are most likely Chinese counterfeits and are meant to deceive as they are not stamped copy or replica. If so, they would have no silver content. I would double check the weight, diameter, and if it is non-magnetic. If they are fake, I would not want them in my collection. If I were to pass away someone might think they were real and try to sell them as real and might get into some trouble

As for price for fakes, I have seen between $1-$3.