Pontiac Authorized Service Porcelain Sign. A bold red Indian head in profile, with a feathered headdress sweeping back to the left, sits in the bright white center of this round sign. Around it, a deep navy blue ring carries PONTIAC arched across the top and SERVICE curved along the bottom in big white letters, with a single white star on each side and the word Authorized in small navy type just above the emblem. The glossy enamel has a thin white rim, mounting holes around the edge and a plain gray back. At 11.25 inches across, it’s a great size for a garage wall, a man cave or a shop bench, and a sharp pick for anyone who loves Pontiac, GM dealership history or classic American car memorabilia. Size: 11.25 diameter. Please see photos for details. Wrapped and boxed for a safe trip. Most orders go out within 24 hours. Hundreds more signs in our store. Please look over the photos closely, as they show the exact sign you’ll receive. For gas and oil, automotive, aviation, soda, and general store signs. Send us a message anytime. We’re always happy to talk signs! Bob’s Garage Signs. Thanks for stopping by the garage.