This vintage En-ar-co National Motor Oil porcelain sign is a must-have for any collector of gas and oil memorabilia. Measuring at 16 inches by 12 inches, this original piece of advertising dates back to 1933 and features a colorful and eye-catching design. The brand, En-ar-co, was a major player in the gasoline industry during the early 20th century, making this sign a unique and valuable addition to any collection of gas and oil memorabilia.