Vintage Route 66 Porcelain Sign. Route 66 sign is a classic piece of Americana that will transport you back to a simpler time. The 11 1/2″ x 11″ porcelain sign features the iconic highway shield and is perfect for any collector of gas and oil memorabilia. Made in the United States with porcelain on both sides. This sign will enhance your retro man cave, gasoline collection, shop, bar, or garage. It is your chance to own a piece of the Mother Road. Vintage Route 66 porcelain sign. Highway shield shape AZ. 11 1/2″ x 11″. Vibrant colors and excellent porcelain.