The Adler looks fine. Duff looks good too, but the issue with the Slash autograph is that for the years 2002 - 2009, he always wrote the date as "2k2" or "2k6" for example. I have never seen a Slash autograph that looks authentic with the date format '01 for example (I am not sure what year that is supposed to be under his signature). I would avoid the Duff and Slash photo for that reason alone. There are also two points where Slash's signature disconnect which is atypical but not enough to conclude that it is a forgery. I just find it confusing because Duff's signature still looks perfect. Hopefully this explanation helps.