While largely common, Lincoln Memorial cents do offer collectors a few neat varieties and a handful of real rarities. Chief among the error varieties are the 1969-S, 1972, 1983, 1984, and 1995 doubled dies, with the 1969-S doubled die pulling high five- and low six-figure prices on the scarce occasions when the rarity turns up in auction. Also important to recognize are the 1960 and 1960-D large and small date varieties and the 1970-S small date cents.
In 1982, the composition of the Lincoln cent changed from 95% copper and 5% zinc to copper-plated zinc. Making matters all the more complicated for numismatists are the large- and small-date varieties of 1982 shared across both compositional profiles. At least a few significant transitional errors were born of this milestone compositional changeup, with the most valuable being the 1982-D bronze small-date Lincoln cent; the discovery specimen of which sold for $18,800 in 2017. To date, similar though less-valuable off-metal transitional errors are known for the 1983-D and, more oddly, the 1989-D Lincoln cent.