The obverse of a proof-quality Lincoln cent with cameo effect. This has been the United States one-cent coin since 1909. Among United States coins, there are more one-cent coins produced than any other denomination. The reverse has featured the Lincoln Memorial since 1959. When the Lincoln cent made its initial appearance, it marked a radical departure from the accepted styling of United States coins. A strong feeling had prevailed against using portraits, but public sentiment stemming from the 100th anniversary celebration of Abraham Lincoln's birth proved stronger than the long-standing prejudice.Photo credit: U.S. Mint