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 ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Investopedia / Matthew Collins A reference number is a unique combination of letters and/or ...

You won't find a serial number for a Samsung Galaxy S10 on its case — you'll have to go into your phone's software. You can find the serial number in the Settings app by choosing "About phone." You ...