Joe Montana Autographed San Francisco 49ers amp Mini Helmet JSA 40323 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 amp mini helmet that was personally autographed by Joe Montana. Includes a certificate of authenticity from James Spence Authentication (JSA) and Denver Autographs.