Photo measures 8" x 10" in size and has been hand-signed in black felt tip pen by Dalvin Cook. The autograph includes an official James Spence Authentication (JSA) "Signature Debut" hologram. "Signature Debut" is the autographed memorabilia equivalent to a rookie card. The JSA definition of a "Signature Debut" is as follows: "Any item that is autographed and received by JSA prior to the last game of the signer's official rookie season.Authentication: JSA "Signature Debut" Hologram Check out our more than 3,000 signed jerseys at our confines collectibles website. Phone number and email address listed on our store website. If you live in the central Florida area, give us a call you can stop by our offices and browse thru our extensive inventory and save on shipping. As always 2nd and 3rd single unframed jerseys will ship for free win the first purchase. Thanks for Looking.