PREVENTS FROZEN GAS LINES Old Gas Station Gas Pump Topper. Point of sale gasoline additives. This display was used out on the pump island when the attendant came out to Pump your gas. They could sell it to you on the island while pumping your gas. It’s from the 40’s and we’re still in use into the late 60’s. The sign is 9” by 12” the overall height is 15” by 19” by 10”. Thanks for looking.