The 1999-S US Mint Proof Set 9 Coin Set offers a collection of uncirculated coins in original government packaging with a Certificate of Authenticity from the U.S. Mint. This set includes coins with denominations of 1C, 5C, 10C, 25C, and 50C, all composed of copper and struck in proof condition at the San Francisco Mint in 1999. A valuable addition to any coin enthusiast's collection, this set represents a piece of American numismatic history. State quarters for this year are Delaware, Pennsylvania, New Jersey, Georgia and Connecticut.