Auction has ended.
In 1964, America faced an impending coin shortage due to speculation and hoarding of small change, thus requiring all the attentions of the Philadelphia Mint. The shortage was so severe, that the Mint broke a long-standing tradition, and produced 1964 dated coins, as late as 1966! Even worse, the Treasury discontinued production of Proof Sets and Mint Sets, so that full production capacity could be focused on coins for circulation. As an alternative, the Mint began producing Special Mint Sets containing coins that were, in effect, souped-up Uncirculated pieces. The "special" finish was brighter and shinier than on regular coins struck for general use, but short of the brilliant, mirrored surfaces of true Proof coins