Clinton Portis Autographed Denver Broncos Mini Helmet Beckett 42805 The number in the listing title is just an inventory sku for our records and is not the authentication number. The item pictured is a stock photo unless otherwise noted. This is a Denver Broncos Mini Helmet that was personally autographed by Clinton Portis. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.