2012 UNITED STATES SILVER PROOF SET. This coin is guaranteed authentic.The item "2012 United States Silver Proof Set (Nice original set)" is in sale since Tuesday, March 08, 2016. This item is in the category "Coins & Paper Money\Coins\ US\Proof Sets". The seller is "rkcoindealer" and is located in Springfield, Missouri. This item can be shipped to United States.