Vlad Guerrero Jr & Vladimir Guerrero Sr Autographed OML Baseball JSA 36505 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 official Major League baseball that was personally autographed by Vladimir Guerrero Jr and Vladimir Guerrero Sr. Includes a certificate of authenticity from James Spence Authentication (JSA) and Denver Autographs.