Add Yahoo as a preferred source to see more of our stories on Google. Credit: New Africa/Shutterstock Credit: New Africa/Shutterstock You know those pennies, nickels, dimes, and quarters in your ...

What collectors should know about cleaned coins, details grades, and authenticating short snorters and their signatures.

Add Yahoo as a preferred source to see more of our stories on Google. Here's what to do—and not do—when cleaning collected coins. Chalk it up to the excitement of having my own money for the first ...

Thanks for the hint on cleaning coins. However, please tell the folks not to try it with the new "gold" dollars. I tried to clean up a few, and in less than 15 minutes, the cleaner proceeded to remove ...

Cleaning Roman coins is a delicate process that can reveal portraits, inscriptions, mint marks, and hidden historical detail.