Bo Jackson Autographed/Signed Oakland Raiders VSR4 Mini Helmet Beckett 28792 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 Oakland Raiders VSR4 mini helmet that was personally autographed by Bo Jackson. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.