This Autographed Huffington Pro Electric Guitar has been Personally Signed by Carmine Appice, Tim Bogert & Mark Stein of Vanilla Fudge. This item is 100% Authentic and comes with a PSA/DNA Certification Card and a matching numbered Hologram.The authenticity can be verified on Professional Sports Authenticator website. Press Pass Collectibles only offers Authentic Autographs by Carmine Appice, Tim Bogert & Mark Stein through Signings, In-Person Signings or Private Collections to include a 100% money back Lifetime Authenticity Guarantee.