Letter size Brooklyn Dodgers 1988 commemorative cachet envelope autographed in black ballpoint pen by legendary Hall of Fame pitcher Sandy Koufax, professionally matted in blue and framed with glass in white wood, ready to hang. Authenticated by JSA with their matching numbered sticker on the cachet and certificate of authenticity card. Framed size is about 14 by 21 inches. ONLY ONE AVAILABLE FOR SALE.