English: Poster from the 1938 serial Flash Gordon's Trip to Mars.
The item has no copyright markings on it as can be seen in the links above. At lower left is Country of origin USA. At lower right is the logo for the Morgan Litho Company, who proudced the poster.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
Film serial poster for ''[[Flash Gordon's Trip to Mars]]'' [http://www.movieposterdb.com/poster/50c22f57 Source] == Fair use rationale for [[Flash Gordon's Trip to Mars]] == #For an article about a film, the original poster is arguably one of the most i
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Poster from the 1938 serial Flash Gordon's Trip to Mars