Vintage pinback pin, U.A.W. - C.I.O. Let's Make It 100%, marked on the inside Imber Quality Products L. J. Imber Co. Chicago ILL., in n-mint unused new old stock condition. Couple of scuffs/spots. Size is 1 1/8" in diameter. Pictures show front and inside. NOTE: All of the advertising items I have listed are guaranteed to be 100% authentic originals. They are all clean and ready for display. Thank you for your purchase I appreciate it.