2012 Limited Edition Silver Proof 8 pc Set U. S Mint OGP COA SKU:CPC495. This 2012 Limited Edition Silver Proof 8 Piece Set includes a Kennedy half, Roosevelt dime, and five America the Beautiful quarters struck in 90% silver with a proof finish. The set also includes a 1 oz American Eagle proof coin struck in 99.9% silver. The coins are housed in a plastic display case and include original government packaging and certificate of authenticity. The silver eagle, half dollar, and two of the quarters are toned. The images you see are for the exact item you will receive. Mint Limited Edition Silver Proof Set.