Featured is a William Karlsson signed Vegas Golden Knights Fanatics jersey. This jersey was hand signed by William Karlsson and authenticated by Fanatics authentication services. Included with the jersey is a Fanatics hologram and certificate of authentication. This item would make a great addition to any sports memorabilia collection.. SPECIFICATIONS Autographed By: William Karlsson Team: Las Vegas Golden Knights Sport: Hockey Authentication: James Spence Authentication (JSA)