This vintage Union G.M. Diesol Diesel Fuel sign is a circular sign. The entire background is navy blue. The word “Union” is at the top and is white text. “G.M. Diesol” is in the center of the sign in orange text with small white border trim. (Alternative signs have this portion with the text only as “Diesol,” and without the “G.M.” The bottom of the circle has the text “Diesel Fuel” in white lettering. There are four mounting holes.