1995-1997 3 Set KEY DATE Prestige Proof Set Run US Mint Prestige Proof Sets - 20 Coins, 3 Complete Sets. 1995-1997 US Mint Prestige Proof Sets - 20 Coins, 3 Complete Sets. In 1983, the mint released a special mint set containing a commemorative dollar coin. This set, known as the Prestige proof set, was sold every year until 1997 (except 1985, when no commemorative coins were produced) containing a commemorative dollar coin and sometimes a commemorative half dollar.