Or maybe you’re shopping at the secondhand store when you get a unique piece of paper money. Regardless of where or how you’ve found them, you now have some potentially high-value coins or ...

Different ways of engraving and printing can alter paper currency’s value, so much so that what seems like a regular $2 bill to the untrained eye is actually worth thousands. Some of the most ...

If you do find old currency or something that could potentially be valuable, one word of advice: Don’t clean it. “Cleaned coins lose a significant value in the marketplace. Collectors prefer ...