Mark McGwire and Jose Canesco hasve autographed this official MLB baseball. McGwire wrote 87 AL ROY and Canseco also wrote 88 AL ROY and BASH BROTHERS. Autograph is authenticated by James Spence Authentication (JSA) and comes with their uniquely numbered authenticity sticker on the item and COA with same matching number which is verified on their site. A display case is also included.Stock image.