Definition:A SMS currency is a coin that was in a collection of mint US issued during the years 1965, 1966 and 1967. The u.s. Mint proof coins not strike during these three years, so that they issue Special Mint Sets (sets of SMS) instead. SMS collections contain higher quality normal coins that can be said, in addition to regular uncirculated coins of the same year. SMS set coins are often sold individually, but are not particularly rare, despite the invented name. SMS Mintages coins are as follows:
1965 2,360 1,000,000 coins-SMS
1966 SMS coins-2,261,583
1967 SMS coins-1.952,344
