1986, United States Proof Set, 5 Coins Inside. The 1986-S Proof Set has one of the lowest mintages of recent decades, and is one of the most valuable sets of the 1980s.Each set contained five coins: One example each of the Lincoln Cent, Jefferson Nickel, Roosevelt Dime, Washington Quarter, and Kennedy Half Dollar.About the sets: All coins in the 1986-S Proof Set were intended to have a Cameo or Deep Cameo Finish.Mintage: 2,411,180 setsOriginal packaging: The coins of the 1986-S Proof Set were placed in individual holes in a purple-colored, textured paper and cardboard insert, then sealed in a two-piece, clear plastic case. The case was then inserted into a protective outer cover, consisting of purple cardboard, imprinted with the somewhat confusing silver words: "United States Proof Set • 1986.