I also have Jimmy's autograph. Which will remain in my family forever. My will states that my Led Zeppelin collection is never to be sold. It is to be passed down to each generation, the first grandchild.......and so on. I will show it to ppl, but they are not allowed to touch it. I have museum quality paper protecting it. Seems like everytime someone wants to see it, they also want to touch it. Oils from your hands will ruin it over time.
I have Robert's autograph as well. He signs things more often than Pagey. I still don't have John Paul's autograph. Perhaps someday.