This is a custom green size XL jersey that was personally autographed by Keith Jackson. During his four seasons at Oklahoma (1984-1987) the Sooners were 42-5-1 and won the 1985 National Championship. He was later drafted by the Philadelphia Eagles in 1988 and would win the Offensive Rookie of the Year and had three consecutive All-Pro seasons. He later ended his career following the Green Bay Packers 1996 Super Bowl Championship. This includes a certificate of authenticity from Denver Autographs.