OK, maybe there's some tones that equal it. But I'm not sure there's any better example of great tone.
Here's the song: http://www.youtube.com/watch?v=QeOKj5XdVAE&feature=fvw
How did Peter do it? Do you think he's using the neck or bridge pickup? What amp did he record with when he was playing with John Mayall? My best guess would be a 50 watt Marshall, maybe with a 4 x 12 Marshall cab.
Obviously most of it comes from within - from being Peter Green - from his soul and touch. Gary Moore recorded with Peter Green's Les Paul and got some great sounds out of it, but, IMO, nothing that equaled the sound Peter got out of it.
I've googled "Peter Green tone Supernatural" but mostly found a lot of wrong information, guesses and people regurgitating stuff they'd read on the internet - some wrong, some right and some out and out BS.
I do think it's true that he took apart the neck pickup and reversed the magnet by mistake and then reversed the neck humbucker on his Les Paul so the pole pieces were closer to the bridge.
Here's a video of a guy trying to play like Peter Green. He does a pretty good job but he doesn't get the sustain and he muffs a few notes. Still, it's not bad. He does it on the bridge pickup: http://www.youtube.com/watch?v=-9c7r2T-Kyg
Here's another guy trying to get that sound too: http://www.youtube.com/watch?v=VKAuZm-zttg
By the way, here's a nice live and recent clip of Peter doing another of my favorites: Albatross. http://www.youtube.com/watch?v=pH9YB...eature=related