There's nothing about that guitar that looks like Gibson had anything to do with it. Of course...YMMV.:jim
And what do you base that on? :hmm
Did Gibson even do Custom Orders of that extent (practically every part of that guitar is unique and has nothing to do with origin Gibson parts) in the 60s/70s?
This looks like some kind of a practical joke by BG, just like his so called Moderne.
Gibson had done custom orders for decades by then.
But as Big Al pointed out, they didn't have [at that time] a contract with Les and would not have made a custom designed Les Paul then.