Vintage Clay Smith Cams Porcelain Sign Genuine Mr. Horsepower Long Beach California Summit Racing Hot Rod Shop Street Rods Rat Fink NASCAR Indy Car USAC Gas Oil. Please view all the pictures well for they are part of the description. SIGN MEASURES 8″ FROM ONE SIDE TO THE OTHER SIDE X 4″ FROM THE TOP OF IT TO THE BOTTOM OF IT. Sign has 4 holes for mounting. Sign has porcelain chipping, rust, dings, fading and scratches. Great addition to any collection or man cave.