Rare - Extra Large Shell Motor Oil - Enamel Garage Advertising Sign A Large Single-sided Shell Clam Advertising Sign for Shell Motor Oil. This Shell motor oil enamel advertising sign was designed by the highly collectible Geo Ham. Géo Ham, Georges Hamel was a French painter and illustrator, He is known for his illustrations of automobiles which appeared in L'Illustration. This metal enamel sign is in good used condition for the age with a great aged patina - Please see all the images. Extra Large Size : Height 70 Cm, Width 90 Cm. Weight: Approx 9 Kgs. We are unsure of the exact age, but would Estimate around the 1960's to 1970's Period. The sign has been kept in a private automobilia collection for many years. The Sign is in the original vintage condition. Ideal for a Garage, Workshop, or Dealership. Worldwide delivery via Tracked and insured courier service. #salvagecollection