1.5" picturing Black Panther and with date of "Oct. 29, 1966." Tiny curl text reads "Printed by Members of P.&P.W. I.U. 450" followed by a circle enclosing the letters "I.W.W." and partial lettering surrounding those initials with the full name of the Industrial Workers of the World. Button has near invisible 1/32" nick on the celluloid covering on the left side rim not showing at all from the front and exceedingly trivial. Button displays Mint. Rare.