You may have a few state quarters lost in your couch or collecting dust in your piggy bank. Some may even be worth more than 25 cents.

Per GoBankingRates, the quarter should weigh between 5.9-6.3 grams on a coin scale. It said these quarters often look thicker ...

A coin sitting in a jar or drawer could be worth thousands of dollars if it has a rare mistake from the U.S. Mint. Some 1999 state quarters from Georgia have sold for as much as $10,000 due to unusual ...

Discover the study of numismatics—analyzing coins for rarity, historical context, and collectible value. Learn about the ...