Tim Tebow Signed Denver Broncos 2010 Topps Grade 10 Auto Beckett 40471 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is a 2010 Topps Chrome trading card that was personally autographed by Tim Tebow with a grade 10 autographs. This was professionally authenticated and slabbed by Beckett Authentication Services (BAS), also includes a certificate of authenticity from Denver Autographs.