I have a signed airline map with about 25 autographs on it. All in ball point pen. I would like to display this item, but I don't want the autographs to fade on me. This item is 6 inch x 11 inch size.
Clamshell boxes are a great idea. I have some of my better pieces in clamshell boxes. Another thought would be to frame a high quality repro and store the original away. I use a company literally across the street that does high quality corporate repros for National Geographic and other image sensitive projects all the time.