When I first saw the autograph, I looked at it and thought "Looks like a fountain pen" to which I see Steve and Ron have said the same thing. The thing that makes me think it's legit and not an autopen is the way the ink continues to fade while the autograph reaches the end. It might just be my eyes deceiving me, but "Norris" in contrast to "James" seems to be a little lighter.
This also seems like a very miniscule detail, but it seems to me that a signature stickler using an autopen would probably have it perfectly dot their Is a little more symmetrical to the letter itself, where this one starts at a weird angle and ends facing outward to the I in Norris farther from the letter than perfect, which is consistent to the autograph Tina listed, where the dot is pretty well just over the S.