1.25" with backpaper from St. Louis Button Co. Button features party initials "S.L.P." at top with graphic of arm and hammer below and portraits of their presidential and vice presidential candidates "Gillhaus" and "Munro." Has several tiny thin white lines over about one third of the button's lower half. These are in the printing of this example and are not scratches. One tiny pinpoint indentation at 10 o'clock in the red field that is only seen in reflected light. Exc.