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. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Science Source |
Bildgröße: | 6000 px × 4000 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |