A piggy bank in the days of bitcoin and online banking might seem quaint or even archaic. But even as digital currency overtakes our bank accounts, collectors are still in search of valuable and historic coins. Odds are your piggy bank is filled with humdrum American pennies and dimes, but your stash might include collectible coins that have accrued in value.
Just like collectible plush toys or Pokémon cards, coins can be worth a lot more money than their original value would suggest. And strangely enough, coins from the United States Mint that aren't in mint condition due to an error or defect of some kind are often worth the most.
The coins on this list are rare, but the whereabouts of some of them are unknown, so shatter your old piggy bank and see if you can cash in uncommon currency. Only a few of these coins are worth millions, but even a quarter that's worth a mere $25 offers a return on its initial value that any investor would envy.
What It's Worth: Up to $7,590,000
Why It's Worth So Much: The $20 Saint-Gaudens double eagle coin, named after its designer, sculptor Augustus Saint-Gaudens, is considered one of the most beautiful coins ever created in the US. The coin was issued from 1907 to 1933; however, the vast majority of 1933 coins were melted down into bars after President Franklin D. Roosevelt abolished the gold standard.
They were banned from circulation, and many of the coins illegally ended up in private hands. In 2002, one owned by King Farouk of Egypt sold for nearly $7.6 million to an anonymous buyer at a Sotheby’s auction. The proceeds were split between the US government and the coin dealer who sold it.
What It's Worth: Up to $4.5 million
Why It's Worth So Much: Only five 1913 Liberty Head nickels were produced. Their rarity is attributed to the US Mint's decision to replace the "Lady Liberty" head design with that of a buffalo. Apparently, a US Mint worker surreptitiously made the five coins in 1913 using equipment created in case the buffalo coin dies wouldn't be ready in time for production.
An anonymous buyer purchased a Liberty Head nickel for $4.5 million in 2018.
What It's Worth: Up to $1.9 million
Why It's Worth So Much: The 1894-S Barber dime, designed by Charles E. Barber, chief engraver of the US Mint, is one of the rarest American coins. Only 24 were ever made, and nine are believed to exist today. The reason for their limited production remains a mystery. One coin expert said workers at the US Mint in San Francisco needed a dollar amount ending in 40 cents to even up an account, so they created 24 dimes. Another theory suggests the Mint's director had the coins made as gifts for a group of acquaintances he wanted to impress.
A version of the coin that was the subject of a 2016 Pawn Stars episode turned out to be fake. In 2017 an anonymous collector purchased an 1894-S Barber dime for just under $2 million.
What It's Worth: Up to $1.7 million
Why It's Worth So Much: Whether you hoard pennies or toss the coins in fountains, you probably haven't thought much about the material used to make them. Before 1943, pennies were made with a combination of copper and nickel. Because those metals were in high demand during World War II, the US Mint started pressing pennies in zinc-coated steel.
Approximately 40 pennies were pressed in copper by accident, however, and those coins fetch... a pretty penny. In 2010 an anonymous businessman bought one for $1.7 million.