I have found this gem a few time ago and start wondering whether it is the first nude combat captured on film. It is in fast motion, typical attribute of movies shot in the 1920s when cameras run at 18-19 frames/second for saving film. Therefore, I suspect it came from that period, specially because it is a German production and the country had a liberal approach to nudity.
Unfortunately, it is just a two minutes clip and apparently the fight is longer.
Update: Following the information given by the clip finder (see the comment), I have done a brief research on the Web. The footage has come from Karl Höffkes Archives, a huge repository of common life scenes in Germany in the 20th century (I don´t know the language, so I had to use bare tools as Google Translate). The above clip is here and on its brief information line, Karl dates the material to the 1940s (or even the 1960s) and the location at a certain "Atrium". There was a theater with this name in Dusseldorf that held female wrestling events in the 1940s after the war. Does anyone can find more?
Two more things: my assumptions about the film speed were just a fantasy and I have supposed that I could post the video here...