Yes #52 is his favorite that he put cream plastic on. It was used in the studio for BOJH. I hear there is a team of Gibson surgeons dispatched to reatach the I assume the headstock. I saw Peter Greens guitar at The Dallas Guitar Show a couple of years ago and it had a reatached headstock very poorly done but it still fetched around a million dollars when it sold. I think it still had a bit of mojo unaffected by the detachment. I am guessing it will live to wail again.
By the way it is the one played on Sloe Gin and The Great Flood on the RAH DVD