This product is a rare and large vintage Oldsmobile service porcelain sign, measuring approximately 29 inches in diameter. The sign features a multi-color design and was created in the 1950s, making it an original piece of advertising memorabilia. With a theme of gas and oil, this collectible sign is a unique and sought-after item for vintage automotive enthusiasts, showcasing the iconic Oldsmobile brand and harkening back to a bygone era of American automotive history.