Ok, so this one seems way too good to be true.

I am considering buying a signed Benny Goodman album: Benny Goodman Carnegie Hall Jazz Concert Vol 1. The jacket not only shows Benny Goodman's signature but also those of Harry James, Count Basie, Gene Krupa & Lionel Hampton. I have never seen such a collection of jazz greats all on one lp. Am I dreaming or could these signatures be real? If they are... am I looking at something that might be a one-of-a-kind item? If so what could this possibly sell for?

Looking for the jazz experts to give me some guidance here. Am I looking at something real or too good to be true (fake)?

Thanks in advance for any help on this.

Vic