What are you having signed, any by who?
And while a personally acquired autograph can be very very special, keep in mind it pretty much devalues the poster completely should you ever wish to sell it.
I'd like to revise my own statement. In haste, I didn't say what I wanted to exactly how I wanted to, and I came across just sounding firm and ignorant.
I've always wanted signatures from the Pixar brain trust. I really value and appreciate the idea of a signature of an artist you enjoy. I myself have a production sketch from
The Iron Giant with Brad Bird's approval signature on it that I really love. When I'm searching however, I almost never buy an autographed item. Even if it comes with a picture of the person french kissing the celebrity in question and a hand-written love letter detailing the steamy evening they shared, there is no way to identify that it's actually the artist's signature.
I know somebody who got their picture taken with Stanley Tucci in New York but neglected to get an autograph. She said that after he left, she considered simply scribbling his name on a piece of paper and nobody would doubt he had signed it because of the picture. That's the problem with autographed items. Because even with photographic evidence and certificates of authenticity, it could still belong to anyone. This idea seems to haunt many collectors and turns them off of autographed pieces, because even if they're buying a poster they want, the signature could belong to the seller.
Now personal autographs like yours are excellent and extremely valuable, simply because you
know them to be real and those around you will appreciate the credibility. I really admire your collection. Had I known the nature of your question more adequately (I jump to conclusions a lot) I wouldn't have even mentioned the compromise of resale value.
Please pardon my lunacy.