Pull any bill out of your wallet. See the dark green numbers on the top-left and top-right corners? Those are serial numbers, and some are more rare than others. If you happen to have paper money with ...

There are all kinds of reasons why you might want to check out your PC's serial number. You might need to provide it to your employer, or you might want to check it while troubleshooting technical ...

Brendan is a freelance writer and content creator from Portland, OR. He covers tech and gaming for Lifehacker, and has also written for Digital Trends, EGM, Business Insider, IGN, and more. Apple is ...

JOPLIN, Mo. (KSNF) — That $1, $5, or $10 bill in your wallet might be worth way more than its face value. Knowing what your paper money might be worth is all in the serial number. Serial numbers are ...

You probably don't think twice about the crumpled dollar bills sitting in your wallet. They're just money, right? Here's the thing though. Some of those bills might actually be sitting on value you'd ...