Marx Buck Rogers clockwork rocket Ship American, circa late 1930s, multi-coloured lithographed tinplate rocket ship, red lettering to sides 'Buck Rogers', grey tinplate wheels, with maker's mark and black printed lettering to base 'Louis Marx & Co. 200-5th Ave New York USA, Patented March 15 1927', lithography generally quite faded, unboxed (F) 31 cm long