Comparison of Copper and Zinc Pennies

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Size: 6000px × 4000px
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Photo credit: © Science History Images / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: .., alloy, america, cent, coin, coins, compare, comparison, composition, copper, copper-plate, copper-plated, copper-plating, cross, cross-section, currency, cut, cutaway, elements, epromo-lab-photos, epromo-macro-photos, interior, metal, money, numismatics, pennies, penny, piece, scientific, section, usa, zinc