1.25" blue and silver button used to promote 1939 Universal serial starring Buster Crabbe. Text reads "Buck Rogers Strange World Aventures Club" and shows him in space helmet with rocketship to the right plus faint figure of man holding space gun at the lower right. The button was issued along with a membership card by movie theater. Only fourth we've seen. Example two years ago realized $2,654.00 with minor flaws. This example is essentially Mint with Phila. Badge backpaper. See Enchanted Island Employee Badge #658 and Buck Rogers exhibit button #659.