For sale is a 2012 United States Mint Silver Proof Set. This set includes a Lincoln cent, Jefferson nickel, a 90% silver Roosevelt dime, 90% Silver Kennedy half dollar, a Sacagawea dollar, five 90% silver National Parks quarters (El Yunque,Chaco Culture, Acadia, Hawai'i Volcanoes, Denali) and four Presidential dollars (Chester Arthur, Grover Cleveland, Benjamin Harris, and Grover Cleveland), all minted in proof quality at the San Francisco Mint.