This United States Mint 50 State Quarters Proof Setâ„¢ includes coins from NY, NC, RI, VT, and KY. The coins are uncirculated and come in a US Mint packaged shape. They were struck in San Francisco in 2001 and are made of copper/nickel. The denomination of the coins is 25C and they are part of the State Quarters series. The set is certified by the U.S. Mint and is a great addition to any coin collection.