Themed balls do better than just conglomerates of signatures. If there was anything tying the ball to the White House that would be fantastic. As it is, I would have your dad write a letter explaining the history of the ball and get it notarized IN ADDITION to getting it authenticated if you ever plan on selling it. The letter from a Secret Service Agent (I assume he wasn't on duty at the event) would serve as pretty good provenance for the story and should help add some value. It would've been nice to have the President on the ball as well to add to that story.
|