Vintage Road Runner Mopar Plymouth Porcelain Sign. This vintage porcelain sign features the iconic Road Runner design, making it a must-have for any Mopar or Chrysler enthusiast. Measuring 11 3/4 in size, it’s perfect for displaying on a wall or as part of a collection. The sign’s colors make it eye-catching and visually appealing. As a gas service pump sign, it’s a unique piece of advertising memorabilia that captures the essence of the automotive industry. The brand, Plymouth, is featured prominently on the sign, by the Road Runner lettering. This sign is a great addition to any collection, or a perfect gift for the car lover in your life. Mopar Plymouth Chrysler Road Runner. Porcelain on both sides. Bright colors for excellent display.