This lot includes four 1955 U.S. Mint silver proof sets that have been opened but still have their original government packaging envelope and sealed cello. These sets are in pristine condition and have not been circulated. The sets contain a total of 20 coins, each struck in proof quality, and include one Franklin Half Dollar, one Washington Quarter, one Roosevelt Dime, one Jefferson Nickel, and one Lincoln Cent. These coins were struck at the Philadelphia Mint and bear the "P" mintmark. The sets are certified by the U.S. Mint and were manufactured in the United States.