RARE VINTAGE 30” PORCELAIN HARLEY-DAVIDSON RED DEVIL RACING MOTOR OIL DEALER SIGN. REALLY NICE CONDITION! This one is porcelain coated steel not the cheap tin reproduction version that Harley-Davidson dealerships sell. Great graphics. Measures 30”x20”. I just bought some parts from an old collection and picked up this one with them. I was told the seller thought this was 1940s-1950s. I’m selling off a lot of my collection. Check out my other items for sale. I can combine shipping if the items can be packed together.