Please keep in mind: I am not a professional autograph authenticator. However I have had a couple of autographs run through my store and I’ve learned quite a bit from the pros over the years, so take this with a grain of salt.
Yes, the message is a bit faded but his signature is in fine shape. It does appear to be authentic. However, one thing screams at me that no one ever thinks about. What it’s signed on makes a huge difference in my humble opinion. It appears he’s signed in on an old slipcover of a VHS tape of the movie. It simply does not present well. The good news is if you have it professionally mounted in a shadow box it will help a ton with the presentation and will certainly up its value.
Best of luck with this. His signature is certainly of the more valuable ones.