This is the first year in which the Mint produced Lincoln cents with the Memorial reverse design.
MS65: Even though this coin has a large mintage, coins in MS65 condition are not easy to come by. A lot of roll searching is needed to find examples in this condition or higher.
MS66: In MS66 they are difficult to find and there are probably no more than a couple thousand coins that would merit this grade or higher.
MS67: In this grade coins are considered very scarce with possibly no more than several dozen or so coins surviving in this grade with none being higher.