Here we offer a run/set of United States Proof Sets dated 1960 through 1969. You get (10) ten 5 coin proof sets and a total of 50 coins. Complete with original US Mint boxes or envelopes. The 1960 through 1965 sets come in original US Mint envelopes and the. 1966 through 1969 sets are in the change over original US Mint boxes. From the United States Mint (San Francisco Mint). Each set includes the following 5 coins for each year. The 1965 1966 and 1967 sets are the SMS – Special Mint Sets made for those years. A special mint set often (referred to as an SMS), is a set of coins issued by the U. Mint from 1965 to 1967. These coins are characterized by a better than average strike, since they were struck on higher-tonnage coin presses than circulation strike coins, but they were not struck as Proofs. SMS coins do not have any mint marks. Special mint sets consist of one coin of each circulating type in the year it was issued: cent, nickel, dime, quarter, and half-dollar. The coins were sealed in special packaging. In 1965, a clear vinyl soft plastic called “pliofilm” was used; in 1966 and 1967, the coins were placed into hard plastic cases.