Vintage Mercury Outboard Engines Porcelain Sign. This vintage porcelain sign is a must-have for any collector or enthusiast of Mercury Outboard Motors. Measuring 12 inches across, this sign features porcelain on both sides and showcases the iconic Kiekhaefer Mercury logo. It’s the perfect addition to any man cave or decor for a marine gas pump. This sign is a great piece of advertising memorabilia for anyone interested in gas and oil themes. Its vintage design and featured refinements make it a unique and valuable addition to any collection. This sign will enhance your mancave, collection, shop, or garage. It is your chance to own a piece of Mercury Outboard Motors advertising. Vibrant colors and excellent porcelain.