In 2010, an article in The Guardian documented the discovery of a similar video, claiming that it was the only one in existence."
Another interesting item from this - the video was sitting in Karman's pile of older videotapes, and he discovered it when he began digitizing the tapes - so maybe there's a gem of a video sitting in your box of videotapes that is awaiting to be rediscovered on the Internet (and YouTube).
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