A four-leaf clover? Rare. An avocado that’s perfectly ripe, right when you want to eat it? Also rare! True love? Perhaps the rarest of all. But things that are a dime a dozen? Oh, they’re ...

While it may not amount to much at the outset, some of those dimes could be worth far more than their minted value. The U.S. has been producing dimes for more than 200 years, thanks to the Coinage ...