Derek Watt Autographed/Signed Pro Style Black XL Jersey Beckett 39792 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 a custom pro style Black XL jersey with sewn on name and numbers that was personally autographed by Derek Watt. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.