For your consideration, here is a Vintage Southwest Washington Fair Pinback Button, Pin, An Excursion Into The 60's, No. 7104.  It has some wear and a crack in the background surface, by the word "AN."  The button has a diameter of about 1 1/4 inches.  Item pictured is the actual item up for sale and comes from a non-smoking household.  (524.840o-.4px1)