I remember Penthouse publishing an article on the possible "Marilyn Monroe stag film" back in the late 70's/early 80's. I believe the pictures shown in the magazine were taken from this loop that was just posted. If i remember correctly, the loop came from Sweden or Germany.
This is definitely not the loop that the guy paid over a million $ for. As YVO mentionned, few people people have seen it & you supposedly couldn't tell who the male was. Hoover spent years trying to find out who he was, hoping it was one of the Kennedys.