1983 United States Proof Coin Set

1983 United States Proof Coin Set in a blue case. 1983 United States Proof Set. It is a collection of five proof coins minted by the United States Mint in San Francisco. The set includes proof versions of the Lincoln Cent, Jefferson Nickel, Roosevelt Dime, Washington Quarter, and Kennedy Half Dollar. The coins have a mirror-like finish and are housed in a protective hard plastic case with an outer blue box. The 1983 Lincoln cent in this set was made of a copper-plated zinc mixture, which was a change from previous all-copper coins. 4 oz 1