This is a rare and unique $1 dollar bill with a well contamination ink error. The bill features “black” and green serial numbers, making it a very interesting piece for collectors. The serial number itself is also kind of low, adding to its value. The bill is ungraded and uncertified, but its rarity makes it a must-have for any coin and paper money collector. Don't miss out on the opportunity to add this one-of-a-kind bill to your collection.