This 2009 US Mint Set includes 36 uncirculated coins with COAs, featuring the $1 denomination silver coin. The set includes coins struck at the Philadelphia and Denver mints, with a fineness of 0.9 and a business strike type. The United States Mint certified this set, which is a must-have for coin collectors and enthusiasts. The coins are ungraded, and the set comes with a variety of denominations and compositions, making it a great addition to any collection.