Up for sale is a unique 1978 D Washington Quarter that features an error. This coin has a filled in "D" and a filled in mint mark, making it a rare find for any collector. The coin's condition is not specified but it has not been certified. It was manufactured in the United States and belongs to the Coins & Paper Money, Coins: US, and Errors categories. Don't miss your chance to own this one-of-a-kind coin for your collection.