Smitholene Gasoline porcelain sign is a must-have for any gas and oil advertising enthusiast. The sign features bold colors, and prominently displays the Aviation brand. The sign is made of durable porcelain and would make a great addition to any service station or gas pump display. 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 Smitholene Gasoline porcelain sign. 12 inches in diameter. Bright colors w/ porcelain on both sides.