A Cobra Kai/Karate Kid Unframed 11×17 Photo hand signed by Martin Kove & William Zabka. The item and signature are in excellent condition. In addition to signing their names, Martin & William also inscribed “Sweep the Leg” & “No Mercy” on the item. AUTHENTICATION: The item is accompanied by a Radtke Sports Certificate of Authenticity – Radtke Sports Serial Numbered and Databased Hologram – Pictures of Martin & William from their signings