For your consideration, here is a Vintage Family Jeans Buy One, Get One 1/2 Off Store Promotional Advertising Pinback Button, Pin.  It has some wear on it and a small dent on the bottom edge.  There is tarnish on the back.  The button has a diameter of 3 3/8 inches.  Item pictured is the actual item up for sale and comes from a non-smoking household.  (440.51s-.4px2)