Frank Clark Autographed/Signed Pro Style Red XL Jersey JSA 39500 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is the exact item you will receive so please see pictures for condition. This is a custom pro style red XL jersey with sewn on name and numbers that was personally autographed by Frank Clark. Includes a certificate of authenticity from James Spence Authentication (JSA) and Denver Autographs.