Vintage Jeep Porcelain Sign. This vintage porcelain sign features Jeep army vehicle with the words “Serving America in Wartime” and “Jeep” in bold letters. The sign measures 12 inches in size. It is a great addition to any gas and oil or advertising collectibles collection. This sign will make your mancave, collection, shop, or garage really stick out. It is your chance to own a piece of Jeep advertising. I have a lot of other signs you might like. Mobil Gas, Harley Motorcycles, Chevrolet, Ford, Coca Cola, Snoopy, Etc! 124 inches in diameter. Vibrant colors and excellent porcelain.