Only silver issued American States quarters were minted in San Francisco. If it has an S mint mark, then you have silver. If it is a D or P then it is clad.
If the field is mirror like and the Washington looks frosted and it has an S mint mark, then you would have a proof. Mind you not all proofs have to be cameos (deep frosted highlights).
If the field is mirror like and the Washington looks frosted and it has an S mint mark, then you would have a proof. Mind you not all proofs have to be cameos (deep frosted highlights).



















