Rectangular Pennzoil enameled advertising sign with black and red lettering against a yellow and black background, surrounded by a black border. Black lettering reading "Property of the Pennzoil Co./Oil City, PA. Made in the U.S.A. A-M 4-48" across bottom of sign. Secured to wooden stretcher with hanger. 58" H x 10" W x 1 1/4" D. American, circa 1946. Provenance: Brad Swanson Collection, Abingdon, VA. (Additional high-resolution photos are available at www.caseantiques.com.)