Thanks for your inputs. My concern was Axl. I agree with you Patrick. The photo of Duff singning is for sure real since I have seen the paper copy. To me it looks like he sign that Rolling Stone cover.
It all comes down to if the seller is trustworthy and legit. If you trust him it should be good. I just recently got Jon Bon Jovi on a LP and it was a bit of mess with all the people. I am glad I have kind of a proof picture otherwise none would belive that scribble is actually his signature. Not all signatures can be text book ones and yet they are legit. This in crowds signed graphs are on the other not as valuable as the ones signed in no rush or pushy situation.
By the way if you think about getting it complete that will be a hard one since Izzy is very very hidden. I do have a Guns 'n Roses LP with Axel missing hope to get it done soon.