This Autographed 16x20 David O'Keefe Lithograph has been Personally Signed by Chevy Chase of Caddyshack. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by Beckett Authentication Services. This is a BAS Witnessed Protection Program item which means a Beckett Authentication Service representative was present when this item was being signed. This is a stock item. We conducted an autograph signing with Chevy Chase and we have several of these available. The one you will receive will be of equal quality to the one pictured. This item can be verified through We only offers Authentic Autographs by Chevy Chase through Signings, In-Person Signings or Private Collections to include a 100% money back Lifetime Authenticity Guarantee.