The original signs were on 5 poles and featured "Jack's" in five individual white rectangles on top with the word "Hamburgers" on a separate sign underneath. A small round sign below had the price of the hamburgers, "15¢". Another sign that shared 3 poles and had "Fries 15¢ Shakes 20¢" written on it, and the final sign shared the opposite 3 poles and had "Self-Service" written on it. Several elements had their writing changed over time, and the last one in the chain, Dora, Al, was removed in 2019 during a remodel.