I totally know where you are coming from, I am just offering an alternative view, but I sincerely respect what you are saying. You may well be right about his autographs - I guess we will never know unless we actually see him (or his secretary) signing them
Generally though, when you collect for a registered charity, most celebs also send you a note or other letter to confirm authenticity - as they know the ultimate use of the autograph is to sell to raise funds, and with the number of fakes out there it is important to prove they are real
This is what I was trying (probably badly!) to explain to you yesterday. Often as charity collectors, we will get autographs from people who usually either don't sign at all, or are pretty erratic! In fact most agents
do handle genuine charity requests differently from other requests.
Often they will make a point of passing some of the few charity requests they receive onto their clients, when perhaps they would usually just send out a preprint
Other collectors sometimes find this hard to accept as they might have tried to get an authentic autograph from the same celeb for years.
I have now collected autographs and autographed memoribilia from nearing 850 celebrities - many from celebrities who are reputed not to sign. I have been lucky enough to get quite a few in-person autographs through my work, but like all the other collectors on here - the vast majority have been through the mail.
If there is one thing I know all about it is Charity Collecting! Trust me
Ian
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Here is the story from CNN: 
him and this broke my heart. 
