This is a fun Pennzoil Oil wise porcelain advertising sign. MATERIAL: PORCELAIN ON STEEL. Please use all 12 pics for your most accurate description of the exact item you will receive. Thanks for shopping with us here at Classic Gas and Oil Signs. Please be sure to check out all of the other collectable pieces the we have available! We focus mainly on Gas & Oil, Motorcycle, Train, Food & Soda, and Farming signs, but occasionally come across some pretty unique stuff to offer you as well. Enjoy the journey and stay safe, friends. Thank you for taking the time to check out our collection!