Banknotes with "solid" serial numbers have routinely sold for thousands on auction sites — if they're in excellent condition.

That $1, $5 or $10 bill in your wallet might be worth way more than its face value if it has one of these types of cool serial numbers -- even hundreds or thousands of dollars. Here’s what to look for ...

Although most of your paper money won't be worth more than what it says, there's a chance it might — even if it's not decades old — based on the serial number. To find the value, or find out if your ...

Serial numbers, paint and logos can look convincing. Golfers need to verify the seller before trusting the club. The ...

Your Mac’s serial number is required for warranty service, among other benefits that Apple offers its customers. Therefore, while not commonly used, you may occasionally need to look it up. While you ...