2015 United States Mint Silver Proof Set 14 coins. The 2015 U.S. Silver proof set contains stunning proof versions of the standard Lincoln Cent and Jefferson Nickel joined by the Native American Golden Dollar (golden alloy). It also contains the four 2015 Presidential Dollars in golden alloy: Harry S. Truman, Dwight D. Eisenhower, John F. Kennedy and Lyndon B. Johnson. Then this set breaks away from the pack with proof versions of the Roosevelt Dime and Kennedy Half-Dollar, each struck in 90% pure silver. Finally, your 2015 Silver Proof Set features all five of the year's America the Beautiful Quarters, also struck in 90% pure silver:Nebraska’s Homestead National Monument of AmericaLouisiana’s Kisatchie National ForestNorth Carolina’s Blue Ridge ParkwayDelaware’s Bombay Hook Wildlife RefugeNew York’s Saratoga National Historical Park