George Gervin Autographed/Signed Pro Style Black Jersey Iceman JSA 43414 The number in the listing title is just an inventory sku for our records and is not the authentication number. The item pictured is the exact item you will receive, please see photos for condition. This is a Pro Style Black Jersey that was personally autographed by George Gervin. Includes a certificate of authenticity from James Spence Authentication (JSA) and Denver Autographs.