This is a Riddell mini helmet which has been personally autographed by Hall of Famer, Jan Stenerud in with “HOF 91” inscription. He played 19 seasons in the NFL including 13 with the Chiefs. During that time he helped the Chiefs to a Super Bowl IV victory when he kicked 3 three field goals. During his career he converted nearly 70% of his field goals and is the only pure place kicker elected into the Hall of Fame. This was signed in Chantilly, VA on April 5, 2014 and includes a picture from the signing as well as a certificate of authenticity (COA) from Denver Autographs.