Earl Campbell Signed 2002 Gridiron Kings Trading Card Beckett 40332 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 an Houston Oilers 2002 Gridiron Kings Slabbed Trading Card that was personally autographed by Earl Campbell. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.