I have my doubts about this signature. Phil Sears is the best on Disney and offers quick opinions. His opinion is worth paying for.
It's not a bad attempt but it appears to be signed slowly. I'm with Joe W but I wouldn't spend the fees for Phil Sears unless you're pretty confident of its authenticity.
Just fixed my comment as I was mistaken. have a look at this link:
Thanks for the replies, everyone. Turns out that it's a machine signed facsimile.