Don Mattingly autographed New York Yankees 1989 Nabisco commemorative 11x14 card sheet JSA

Don Mattingly All-Star 11x14 inch commemorative card sheet made by Nabisco in 1989 autographed in black Sharpie by the former Yankees superstar. Has very minor flaws but still suitable for framing. Authenticated by JSA with their matching numbered sticker on the sheet and certificate of authenticity card. ONLY ONE AVAILABLE FOR SALE.