OMG, awesome. Do you have any sort of proof of authenticity (picture with him after he signed it, etc) or not?
I will get back to you with that. I know my mother took photos and I had a few of them at one point. I have to look around and see if I have them or maybe she has a few. I was really young and he was doing some press thing for some lucas arts game where he did a voice or something. I remember I was young enough to go "Thats not Luke Skywalker" Enough thinking of childhood memories, I will see if I can find something that can authenticate it.