Vintage Eco Balanced Inflation Porcelain Sign. This vintage porcelain sign is a neat piece of advertising memorabilia. It features the iconic Eco Air pump and is designed for use in gas service stations. The pump shaped sign is made of high-quality porcelain and is in good condition. The sign is perfect for collectors of gas and oil memorabilia, as well as people who need to fill their garage or shop. This sign will enhance your mancave, collection, shop, or garage. It is your chance to own a piece of Eco Balanced Inflation advertising. For Your Service Station. Vibrant colors and excellent porcelain.