Vintage Shell Gasoline Sign. This vintage Shell Gasoline sign is a must-have for any gas and oil advertising collector. With its bold Shell Gas colors and iconic Shell pattern, it’s sure to a make display to your collection. This pump plate sign features the Shell Gasoline brand name with large Shell lettering. Perfect for adding a touch of nostalgia to your gasoline collection, retro man cave, garage, gas pump or shop. 11 3/4 inches in diameter.