I love collecting copper pennies.
While some people may think that all pennies are made entirely from copper, virtually every one-cent coin made since late 1982 has a composition consisting of 97.5% zinc and 2.5% copper.
The coppery color of modern-day pennies is merely a thin plating of copper on a 99.2% zinc, 0.8% copper core
Read more: Old Copper Pennies: Which Ones To Save & What They’re Worth