1.25" blue and silver button used to promote 1939 Universal serial starring Buster Crabbe. Text reads "Buck Rogers Strange World Adventures Club" and shows him in space helmet with rocketship to the right plus faint figure of man holding space gun at lower right. The button was issued along with a membership card by movie theater. Only fifth we've seen. This is the last of two from our consignor. Previous example exceeded $3,000. Obverse is essentially mint although on the reverse, by the collet, are 1/8" and .25" hairline cello splits but they lay flat and are barely even visible. Complete with Phila. Badge backpaper.