This 14-coin set from the United States Mint is a must-have for any coin collector. The 2013 silver proof set includes coins with a fineness of 0.9 and features a striking proof strike. The set comes with a box and includes coins that have not been circulated, making them a great addition to any collection. The coins are made of both silver and clad materials and were minted in San Francisco. The set is ungraded and comes with certification from the U. This is a great opportunity to add a unique and valuable piece to your collection.