Real?

judging by the cut edges that just didn't get inside the frame, i'd say yes, the photographer just did not have a wide enough angle lens. the feel is authentic too. but that's just my opinion.
 
Fake, maybe staged, but not real on any level. All the cocks are real and if you look the guy top left and top center is the same guy
 
It's rather clearly composited. As has been pointed out, the same subjects appear repeatedly (not just twins). No guess as to whether it's original vintage or retro.
 
Not real,everyone knows that there weren't any gay people before 1963