Helio Gracie Autographed Collector's Edition

Would this be worth more or less to you if it was signed by just Helio or by Helio along with other members of the Gracie family?

Trying to decide if I should start taking my copy around with me and having other Gracie family members sign it or just leave it as is with only Helio's signature. My copy is a much earlier version with just his signature and was purchased when he was still living.

http://secure.gracieacademy.com/categories/books/GSB-MTHGA.html