For sale is a rare 1956 United States Lincoln Wheat Penny with a unique "Contamination Error." This copper coin has not been certified, but is in circulated condition and has a business strike type. The KM number for this variety is 132 and it features a wheat back. This small cent was minted in Philadelphia and has a brown color. The certification number is uncertified, but the coin is ungraded. It is a great addition to any coin collector's collection and is a valuable piece of American history. Don't miss out on the opportunity to own this rare and unique coin!