Celebrate New York Yankees legend Don Mattingly with this MBIA Invitational program dated August 31, 1989 and hand signed by the former Yankees captain. The program measures approximately 8.5 x 11 inches and provides a distinctive piece connected to Mattingly during the prime of his celebrated playing career. The autograph has been independently authenticated by James Spence Authentication JSA and is accompanied by a JSA Certificate of Authenticity COA.