Shell Gasoline porcelain sign featuring Felix the Cat. This has vibrant colors of red, yellow and blue with excellent porcelain and measures 12 across. Whether you are displaying this sign as part of your collection in your man cave, shop, bar, or garage, or giving it as a gift, you can also browse my other auctions for more vintage gas, oil, aviation, automobile, motorcycle, and hunting signs. Vintage Shell Gasoline porcelain sign. 12 inches in diameter. Bright colors w/ porcelain on both sides.