I don't think the clone is from 1977. aeric77 was the name of the guy that found the cut. i could be wrong, but that's how i've understood it.
strain hoarders are almost as bad as snitches.
"77" was an old original internet based bulletin board and Aeric was on there. I got this info from Mr. Soul at Brothers Grimm seeds. I have had the pleasure of toking the original a couple times and it was nice but not sure how it would compare to strains of today as that was like 15 years ago.