You probably tuck $2 bills into your wallet without thinking much about them, but some of those notes can be quietly valuable ...

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 ...

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 ...

Chances are you haven't spent much time thinking about your Apple device's serial number. Whether you own the benchmark Apple Watch Series 9 or a budget-priced refurbished iPhone, your device's serial ...

If you need to calculate dates in your spreadsheets, Excel uses its own unique system, which it calls Serial Numbers. Every date (month, day, year) and time (hour, minute, and second) has an ...

There are worse things than having a wallet stuffed with $20 bills, especially in this economy. But did you ever stop to consider that those twenties in your pocket could be worth more than their face ...