DK Metcalf Autographed Seattle Seahawks Authentic Lunar Helmet BAS 32442 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is a Seattle Seahawks full size authentic Lunar speed helmet that was personally autographed by DK Metcalf. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.