Randy Gradishar Autographed/Signed Denver Broncos Logo Football ROF JSA 31479 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is a Denver Broncos logo football that was personally autographed by Randy Gradishar with ROF 89 inscription. Includes a certificate of authenticity from James Spence Authentication (JSA) and Denver Autographs.