A coin can be worth a ton of money -- a pretty penny, one might say -- if it's rare and has enough historical significance.

The half dollar is one of the most popular U.S. coins to collect. Though many aren't worth more than their face value, older ...

Here are four ways to check if your coin can be sold for almost $14,000, according to financial review site Tododisca. The coins on the market that are currently going for around $13,500 have ...