This Autographed w/ Bull Sketch 9x11.5 Black & White Photo with the inscription of "Pour mon cher ami Douglas Cooper, le 9.10.61" has been Personally Signed by Pablo Picasso. 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. This photo boasting a wonderful sketch of a bull���a frequent subject in Picasso's works, including the iconic 'Guernica'���this is the quintessential Picasso signed photograph, and the first we have offered that incorporates a bull sketch.