Nate MacKinnon Signed Colorado Avalanche '17 ASG Insc. Hockey Puck JSA 43456 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 Colorado Avalanche 2017 LA All Star Game Hockey Puck that was personally autographed by Nathan MacKinnon "1st ASG" inscription. Includes a certificate of authenticity from James Spence Authentication (JSA) and Denver Autographs.