The authenticity can be verified on Beckett Authentication Services website. This Autographed Auto Graded Gem Mint 10! Black & White 8x10 Promotional Photo with the inscription of "Best Wishes" has been Personally Signed by Sam Kinison. This item is 100% Authentic, it comes slabbed and authenticated by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website.