1955 Ad, Perfect Circle 2-in-1 Chrome Piston Rings“Feels like a new car now!” Source: mudwerks Perfect Circle ad vintage illustration auto parts 2-in-1 chrome piston rings 1955 art Saturday Evening Post magazine Feels like a new car now!
Feed Those Piggies! (by paul.malon)Tony Sarg Source: Flickr / paulmalon ad vintage piston rings perfect circle illustration Tony Sarg 1933
Circle Theory (by paul.malon)1950 Source: Flickr / paulmalon perfect circle piston rings ad vintage illustration