I've seen this before. I know the guy who got it signed. Richard Simpkin, from Australia. He published a book, "Richard and Famous," about his in-person autograph collecting over last few decades. I think he got three Nirvana CDs signed. RR sold another of his recently.
We published an article on him in Autograph magazine...back in 2008-9. Cool stuff.
Really? I was sure this was it, sorry. I stand corrected.