Vintage Ford GT 500 Super Snake Porcelain Sign. This vintage Ford Motors porcelain Shelby GT 500 Super Snake gas pump automotive sign is a must-have for any collector. The sign features a classic design with black, blue, red, orange, and greenish-yellow colors that will surely catch anyone’s attention. The sign is made of high-quality porcelain, ensuring its durability and longevity. It is perfect for displaying in your home, bar, shop, or garage. The sign measures 12 inches in size making it a great addition to any gas & oil, advertising, signs, or collectibles collection. Vintage Ford Motors sign. Porcelain on both sides. 12 inches in diameter. Vibrant colors and excellent porcelain.