The Vintage Pennzoil Motor Oil Double-Sided Porcelain Enamel Dealership Sign is a rare and collectible piece of advertising memorabilia from the 1950s. Featuring the iconic Pennzoil brand in a vibrant yellow color, this original sign is a true vintage gem. Made in the United States, this 30-inch sign is a featured refinement for collectors of vintage porcelain signs, making it a sought-after addition to any advertising or memorabilia collection.