Don Mattingly Autographed New York Yankees Photo Signed MLB Baseball 8x10 JSADon Mattingly signed photo of him running out of the batting box at Yankee Stadium while playing for the New York Yankees Signed in blue fiber tip marker Certificate of authenticity provided by JSA certification number AF91184 Mattingly spent his entire playing career with the Yankees, but went on to enjoy a successful management and coaching career with the Miami Marlins, LA Dodgers and Toronto Blue Jays Measurements: 8" x 10" Excellent condition;