Group of 2 United States Mint Proof Sets 1999-2000 19 coins. Group of 2 United States Proof Sets 1999-2000 19 coins All struck with "S" mint mark. 1999 set contains the five State Quarters honoring Delaware, Pennsylvania, New Jersey, Georgia, and Connecticut. Along with Lincoln Cent, Jefferson Nickel, Roosevelt Dime, and Kennedy Half Dollar. 2000 Set introduce the Proof Sacagawea Dollars with five 2000 State Quarters honoring Massachusetts, Maryland, South Carolina, New Hampshire, and Virginia. The remainingcoins included the 2000-dated Kennedy Half Dollar, Roosevelt Dime, Jefferson Nickel, and Lincoln Cent. All coins are typically found with a cameo or deep cameo finish. The packaging for the set was themed in blue. The dollar, half dollar, dime, nickel, and cent are sealed in one plastic lens, with the five State Quarters in a separate lens. These two lenses were placed together in a decorative cardboard box.