Willie McCovey signed SF Giants 1986 Hall of Fame Gateway cachet JSA

1986 Gateway cachet envelope commemorating the late San Francisco Giants legend Willie McCovey being inducted to the Baseball Hall of Fame autographed in thin black Sharpie. From a paid signing with Gateway. Postmarked in Cooperstown with Induction Day cancellation. Authenticated by JSA with their matching numbered sticker on the back and certificate of authenticity card.