For your consideration, here is a I'm a Bazerkle, I Fly Right! Retro Pinback Button. It may of been part of advertising for an airline, I am not sure. The button has wear and spots on the front. There are some spots on the back also. It has a diameter of 1 3/4 inches. It will be mailed in a box for protection.  Item pictured is the actual item up for sale and comes from a non-smoking household. (211.274b-.3bx)