Vintage Socony Gasoline Porcelain Sign. This vintage porcelain sign features the Socony Gasoline lettering across the center. The sign measures 18″ x 5 7/8″ and has a colorful design with excellent porcelain. It is a great piece of gas and oil advertising memorabilia for collectors, retro man cave decor or your shop or garage. Collectors of vintage gas and oil advertising signs, as well as fans of Nostalgic man cave themes, will appreciate this amazing find. Vintage Socony Gasoline porcelain sign. 18″ x 5 7/8″. Vibrant colors and excellent porcelain.