Comparison of Copper and Zinc Pennies

Comparison of Copper and Zinc Pennies

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Credit: Science Source/SCIENCE PHOTO LIBRARY

Caption: Most pennies minted before 1962 contained 95% copper. Since 1982, pennies are composed of copper-plated zinc (2.5% copper). This photo shows a comparison of the two types of penny.

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Keywords: alloy, american, cent, coin, coins, comparison, composition, copper, copper-plate, copper-plated, copper-plating, cross section, cross-section, currency, cut, cutaway, elements, inside, interior, metal, money, numismatics, one cent piece, pennies, penny, u.s., united states, us money, zinc

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