There's something to be said for collecting old coins. Some people do it for the fun of it or to have a cool story to tell.

Check out Benzinga’s guide to coin grading and circulated vs. uncirculated coins for an in-depth explanation of the grading system. Generally, the better the condition, the higher the value.

Before you toss that random quarter in a fountain or Coinstar, you might want to check if it’s worth anything. If it was produced with any kind of error, like a raised line that shouldn’t be ...