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| Cent (United States) | |
| Value: | 1 cent ($0.01 U.S. dollars) |
| Mass: | 2.5 g |
| Diameter: | 19.05 mm |
| Thickness: | 1.55 mm |
| Edge: | plain |
| Composition: | Copper-plated Zinc 97.5% Zn, 2.5% Cu |
| Obverse | |
| Design: | Abraham Lincoln |
| Designer: | V.D. Brenner |
| Design Date: | 1909 |
| Reverse | |
| Design: | Lincoln Memorial |
| Designer: | Frank Gasparro |
| Design Date: | 1959 |
The United States one-cent coin, commonly called a penny, is a unit of currency equaling one 1/100 of a United States dollar. Its obverse has featured the profile of President Abraham Lincoln since 1909, the centennial of his birth. Since 1959 (the sesquicentennial of Lincoln's birth), the reverse has featured the Lincoln Memorial.
Despite the prevalence of the common term "penny," the U.S. Mint has never actually minted a coin for which this is the official name.
| 1982-present | 97.5% zinc, 2.5% copper |
| 1962-1981 | 95% copper, 5% zinc |
| 1944Events World War II January January 4 The Battle of Monte Cassino begins. January 5 Murder of Danish playwright Kaj Munck January 17 British forces, in Italy, cross the Garigliano River. January 20 The Royal Air Force drops 2,300 tons of bombs on Berlin;-1961 | bronze (95% copper, 5% zinc and tin) |
| 1943 | zinc-plated steel |
| 1864-1942 | bronze |
| 1857-1863 | 88% copper, 12% nickel (a.k.a. NS-12) |
| 1837-1856 | bronze |
| 1793-1836 | copper |
The cent's composition was changed in 1982 because the value of the copper in the coin started to rise above one cent. In 1943, at the peak of World War II, pennies of zinc-plated steel were made for a short time due to war demands for copper; a few (the U.S. Mint reports forty) copper cents from 1943 were produced. Following that year, salvaged ammunition shells made their way into the minting process, and it was not uncommon to see coins featuring streaks of brass or having a considerably darker finish than other issues.
In 1974, a few test cents were struck in aluminum, but were never released for circulation.