Great question! All of the coins in those sets have a dansco slot somewhere all denomination. The most important thing to do is search them for cameo's on all coins. The SMS sets and all coins 1965-1967 have no mint marks and there wasnt alot of effort put forth in there quality comapared to proof coinage,so high grade coins are revered. There is some great literature on this subject. If you have a Cherry Pickers Guide you can search your coins for errors. If you ever look into dansco books. Perhaps the kennedy book #8166 you will find a home for those sets.



















