Jimbo Covert Autographed/Signed Chicago Bears Mini Helmet HOF BAS 31221 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is a Chicago Bears VSR4 mini helmet that was personally autographed by Jimbo Covert with HOF inscription. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.