Jonathon Cooper Autographed Denver Broncos Mini Helmet JSA 43506 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 Jonathon Cooper. Includes a certificate of authenticity from James Spence Authentication (JSA) and Denver Autographs.