I am certainly open to discussion whether this film was really made in 1939. However, being a big fan of pre-1950's movies I would have to say there are certain aspects of the film that would make one suspicious. 1) The film "damage" almost looks like film overlay...it is fairly consistent in looks and comes at a regular intervals EXCEPT during action scenes when they disappear or slow down, 2) missing from the male actors hairstyles is pomade...extremely common usage in the 1930's, and 3) the most important clue is the cinematography and editing...unless the filmmaker was a genuine "visionary" the movie is edited more in the style of modern films...the length of each shot is extremely short, far too many closeups (even of feet...completely unusual), and the editing and cutting between the shots do not match up to what mainstream filmmakers were doing at the time.
If I have to trust my gut...I would have to say that it never felt like an old film to me.