This lot includes 8 United States Mint Silver Proof Sets of the 50 State Quarters, each with a Certificate of Authenticity. Sets are 2005, 2006, 2007, 2012 key set! , 2013, 2014, 2015, 2016 All like new as received from US Mint! The sets feature uncirculated coins with a denomination of 25C and are made of copper nickel with a proof strike type. The coins were minted in San Francisco and have not been graded. Additionally, the sets come with a KM number and were certified by the U. Perfect for any collector, these proof sets showcase the beauty and craftsmanship of United States coinage.