Anybody know if there is a weight difference between a silver proof and a clad proof
State Quarter? If so, what would each weigh? (This silved a similar problem I had with a proof Ike recently.)
At the local coin shop today I bought what the guy claimed was an Illinois silver proof. It's a proof, all right, but just now as I took it out of the cardboard 2x2 to put it into a plastic holder, I could see copper on the edge. I need a way to be sure before I go back there.
Thanks.

Jan
