1970 United States Mint Set in Original Government Packaging! 10 Coins Inside!. 1970 United States Mint Set from 1970 included a total of 10 coins struck at three different mint facilities. Each set comprised of Lincoln Cents (P, D, S), Jefferson Nickels (D, S), Roosevelt Dimes (P, D), Washington Quarters (P, D), and one Kennedy Half Dollar (D) was struck in a composition of 40% silver and importantly was not issued for circulation. This created a low mintage key date for the recently released series and a draw for many collectors. There are also the chance of finding a small date 1970-s Lincoln cent trending $80 for ms65 rd.. The Philadelphia Mint coins and the single Lincoln Cent struck at the San Francisco Mint were placed within a cellophane pack with a blue stripe and the Denver Mint coins were placed in a pack with a red stripe. The two were placed between sheets of light cardboard within a white envelope marked “19__ U.C.” with the Treasury Department address.