Found this today out of a vending machine , picture is not very clear , but it is silver looking all around the edge , with no copper at all showing.
Could be plated in silver. State Quarters were plated in Silver and Gold and sold as a novelty. But these were done outside of the US Mint. Here is an example of the Gold plated version. In actuality, they are only worth 25C each
And that after those nice folks down at Whoever Marketing Associates put all that work into creating and conning, err, marketing them to people, too.
