Celebrate a cornerstone of the New York Yankees dynasty with this Official Major League Baseball hand signed and Personalized To Frank, My #1 Fan by Tino Martinez. Martinez became an important presence in the middle of the Yankees lineup and helped New York capture four World Series championships in five seasons from 1996 through 2000. His memorable postseason performances made him a fan favorite from one of the greatest eras in franchise history. The autograph has been independently authenticated by James Spence Authentication JSA and is accompanied by a JSA Certificate of Authenticity COA.