Harley Davidson Motorcycles porcelain sign features the iconic Harley Davidson Motorcycles logo, making it a must-have for any motorcycle enthusiast. The sign is made of porcelain and has the pinup girl biker with the Police Harley Davison Cruiser. Whether you are displaying this sign as part of your collection in your man cave, shop, bar, or garage, or giving it as a gift, you can also browse my other auctions for more vintage gas, oil, aviation, automobile, motorcycle, and hunting signs. Vintage Harley porcelain sign. 11 3/4 inches in diameter. Bright colors w/ porcelain on both sides.