John Lynch Autographed San Francisco 49ers Mini Helmet Beckett 42713 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 San Francisco 49ers Mini Helmet that was personally autographed by John Lynch. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.