Mike Singletary Autographed/Signed Pro Style Navy Jersey Beckett 41175 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 Pro Style Navy Jersey with sewn on numbers that was personally autographed by Mike Singletary. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.