The Wisconsin state quarter features a cow, cheese, and an ear of corn. One version of this quarter gives the corn an extra leaf low on the ear. This may have happened when a tool was pushed into the ...

Sorting through your spare change might seem like a mundane task, but collectors know that certain state quarters hiding in your pocket could be worth far more than twenty-five cents. S. Mint in 1999, ...

Here are 20 rare state quarters worth additional value, according to Gainesville Coins, USA CoinBook and PCGS.