O.J. Simpson autographed Buffalo Bills 1991 Pro Line Portraits National Convention card (PSA/DNA)

1991 Pro Line Portraits football card autographed in blue ballpoint pen by Buffalo Bills Hall of Fame running back O.J. Simpson. Obtained in person at 1991 National Sports Collectors Convention launch party, embossed in the lower right corner with the 1991 National logo. Authenticated by PSA/DNA and encapsulated. ONLY ONE AVAILABLE FOR SALE.