It was originally based on the Spanish Dollar ... Minted in 1849, this rare coin easily falls into the million-dollar club. Made from 90% gold and 10% copper, this coin weighs just over 33 ...

The value of copper coins, as in all coins, is based on scarcity and condition. Rare coins with minting errors or other unique features tend to bring high prices, as do those in mint or near-mint ...

But finding the right copper coin could make you a millionaire. Read Next: 8 Rare Coins Worth Millions That Are Highly Coveted by Coin Collectors Check Out: 5 Things You Must Do When Your Savings ...