The product is an autographed/inscribed John Lynch "HOF '21" Denver Broncos full-size replica helmet, with the autograph authenticated by Beckett Authentication Services (BAS). This unique item features the signature of the former Denver Broncos safety, who is a member of the Pro Football Hall of Fame class of 2021. The helmet is a must-have for fans of the Denver Broncos and football enthusiasts, making it a valuable and collectible piece for any sports memorabilia collector.