This Autographed 11x14 Photo has been Personally Signed by Ken Norton. This photo has not been signed by Muhammad Ali! Please refer to photo before purchase! This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website. We only offers Authentic Autographs by Ken Norton through Signings, In-Person Signings or Private Collections to include a 100% money back Lifetime Authenticity Guarantee.