This is a Authentic Signed Sports Illustrated that has been Personally Signed & Autographed by Muhammad Ali. This is just the cover, not the whole magazine. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by PSA/DNA #Y06707.Press Pass Collectibles offers a 100% Lifetime Guarantee on all Autographed & Signed Muhammad Ali memorabilia.