Celebrate New York Yankees star Mark Teixeira with this Official Major League Baseball hand signed by the accomplished first baseman. Teixeira became a key member of the Yankees 2009 World Series championship team and built an impressive career highlighted by multiple All Star selections, Gold Glove Awards, and Silver Slugger Awards. The autograph has been independently authenticated by James Spence Authentication JSA and is accompanied by a JSA Certificate of Authenticity COA.