For your consideration is this 100% Pure Pennsylvania Pennzoil sign circa mid 1900's. This sign shows the iconic yellow background with "100% Pure Pennsylvania Pennzoill Safe Lubrication" in larger black lettering and in smaller black lettering "Made in U.S.A. Property of the Pennzoil Company." The condition of this sign is poor showing its age through oxidation spots to the face of the sign and heavy oxidation to the back side of this single sided sign. These signs are highly collectible and sought after. The measurements of this sign are 18" x 31".