Joey Bosa Signed Los Angeles Chargers Authentic 2019 VSR4 Helmet BAS 32353 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is a Los Angeles Chargers full size authentic 2019 VSR4 helmet that was personally autographed by Joey Bosa with Bolt Up inscription. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.