Beginning in 1983 and continuing through 1997, the United States mint issued special proof sets. Proof coins have a brilliant mirror-like finish. The term "proof" refers to a specialized minting process, which begins by manually feeding burnished coin planchets into presses fitted with specially polished dies. Each coin is struck multiple times so the softly frosted, yet detailed, images seem to float above a mirror-like field. These sets contained an example of the currently circulating coins, the cent, nickel, dime, quarter and half dollar, as well as the coins of the current commemorative coin program in a deluxe presentation set. I have the following years in stock.