Three Amigos Autographed Denver Broncos F/S VSR4 D Logo Helmet JSA 34406 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is a Denver Broncos full size 1975 throwback D-Logo replica helmet that was personally autographed by the "Three Amigos" including Vance Johnson, Mark Jackson and Ricky Nattiel. Includes a certificate of authenticity from James Spence Authentication (JSA) and Denver Autographs.