10 Pounds (10 lbs; 4.5 kg) Copper Pennies 1909-1982 USA American Coins Currency 4.5 Kilograms : Collectibles & Fine Art
2018 U.S. Copper Penny: 579,100 ppm Zinc & 419,200 ppm Copper. No Lead, No Cadmium, No Mercury, No Arsenic.