For your consideration, here is an Adlai and Estes Political Campaign Pinback Button, Pin, Stevenson and Kefauver. This is from the 1952 or 1956 Presidential campaign, not sure which. It has some wear and scratches on it. There is some tarnish on the end of the pointy pin. The diameter of the button is 1/2 of an inch. Item pictured is the actual item up for sale and comes from a non-smoking household. (271.313u-.4px1)