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The mass and composition of the cent changed to the current copper-plated zinc core in 1982. Both types were minted in 1982 with no distinguishing mark. Cents minted in 1943 were struck on planchets punched from zinc-coated steel which left the resulting edges uncoated. This caused many of these coins to rust.
After the outbreak of World War II, the demand for copper rose as it was used in ammunition and other military equipment. The US Mint researched ways to reduce or eliminate the usage of copper in cent production. The mint struck pattern coins in various metals, using the obverse design of the Colombian two centavo coin. [1]
The penny, also known as the cent, is a coin in the United States representing one-hundredth of a dollar.It has been the lowest face-value physical unit of U.S. currency since the abolition of the half-cent in 1857 (the abstract mill, which has never been minted, equal to a tenth of a cent, continues to see limited use in the fields of taxation and finance).
The half-cent piece was made of 100% copper and half of a cent, or one two-hundredth of a dollar (five milles). It was slightly smaller than a modern U.S. quarter with diameters 22 mm (1793), [1] 23.5 mm (1794–1836), [2] and 23 mm (1840–1857). [3] They were all produced at the Philadelphia Mint.
Copper Copper Alloy Silver Alloy Silver Gold Platinum Palladium Three Cent 14 mm 0.8 g 0.750 fine 1851–1853 14 mm 0.75 g 0.900 fine 1854–1873 Half Dime 15.5 mm 1.24 g 1794–1873 Dollar 15 mm 1.67 gr 1849–1889 $5 American Gold Eagle 16.5 mm 3.11 g 1986–present $10 American Platinum Eagle 16.5 mm 3.11 g 1997–present Three Cent 17.9 mm ...
The United States large cent was a coin with a face value of 1/100 of a United States dollar. Its nominal diameter was 1 1 ⁄ 8 inch (28.57 mm). The first official mintage of the large cent was in 1793, and its production continued until 1857, when it was officially replaced by the modern-size one-cent coin (commonly called the penny).
Double-die style struck coin from Ancient India, c 304-232 BCE featuring an elephant on one face and a lion on the other. Since that time, coins have been the most universal embodiment of money. These first coins were made of electrum, a naturally occurring pale yellow mixture of gold and silver that was further alloyed with silver and copper.
In addition to authorizing the minting of the two-cent piece, the act changed the composition of the one-cent piece from a copper-nickel alloy (weighing 4.67 grams) to a lighter, less thick piece composed of 95% copper (weighing 3.11 grams). [4]