This vintage porcelain enamel sign measures 12\” X 8\” and features the brand ALLISON, advertising for Perfect Circle piston rings. The sign showcases a multi-color theme with a Gas & Oil design. It is an original piece with an unknown date of creation and was manufactured in the United States. The sign is in excellent condition and has not been modified in any way. This is a unique piece of collectible merchandise and memorabilia that would make a great addition to any Gas & Oil advertising collection.