For your consideration, here is a Vintage 1984 Mondale - Ferraro America Needs New Leadership Pinback Button, Pin.  It has some wear on it.  There is a little tarnish on the back.  The button has a diameter of 2 7/8 inches.  Item pictured is the actual item up for sale and comes from a non-smoking household.  (430.316r-.4px2)