All used DVDs have been refurbished and tested before shipping and should play fine on most machines.
Flash Gordon Conquers the Universe is a 1940 American twelve chapter black-and-white science fiction serial film from Universal Pictures, produced by Henry MacRae, directed by Ford Beebe and Ray Taylor, that stars Buster Crabbe, Carol Hughes, Charles B. Middleton, Frank Shannon, and Roland Drew. The serial was written by George H. Plympton, Basil Dickey, and Barry Shipman and was adapted from Alex Raymond's syndicated newspaper comic strip of the same name. It was the last of the three Universal Flash Gordon serials made between 1936 and 1940.
During the 1950s, all three of these Flash Gordon serials were directly syndicated to television by Motion Pictures for Television, along with many of Universal's other serial output. To avoid confusion with the Flash Gordon TV series airing around the same time, they were retitled Space Soldiers, Space Soldiers' Trip to Mars, and Space Soldiers Conquer the Universe.