Jersey autographed by the sharpshooting 3 point machine, Klay Thompson of the Golden State Warriors. The autograph of Klay on this jersey was authenticated by a team of experts at PSA/DNA and Fanatics, so you can rest assured you are purchasing the real deal. The signature was also graded and is a PSA 10, which makes this jersey very rare. It also has an upgraded letter of authenticity from PSA.