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

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 ...

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 ...

Serial numbers in zone files help your DNS service determine whether it should re-ingest your zone files or ignore them. But there’s more to these pseudo timestamps than meets the eye. In fact, the ...

Most electronics come with a bevy of numbers etched into their frames, stamped on their undersides, and emblazoned onto their boxes. But why? Well, the short answer is that they're needed for model ...

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

Most days, it hardly matters what your Mac serial number is. Who cares about a random series of letters and numbers? But if you ever need to use your warranty and have Apple repair your Mac, you'll ...

While generally speaking, knowing the serial number of your Apple Watch isn't necessarily something you'll need, being able to find it is important should the need arise. After all, the serial number ...