You've probably never given a second thought to the dollar bills sitting in your wallet right now. Most people don't. They're just money, right? Something to grab for coffee or parking meters, and ...

Serial numbers are a frequently used method of tagging and identifying objects that would be otherwise indistinguishable, and are used for everything from firearms to keys, and from passports to ...

Let’s say you buy a pre-owned or vintage watch and want some more information on when it was made, what it might be worth, etc. The watch’s serial number can, in many cases, help you track down this ...