Dan Marino Autographed/Signed Miami Dolphins Flash Mini Helmet JSA 34498 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 Miami Dolphins flash speed mini helmet that was personally autographed by Dan Marino. Includes a certificate of authenticity from James Spence Authentication (JSA) and Denver Autographs.