An Oregon Ducks Speed Authentic Dark Green NCAA Helmet Hand Signed by Jonathan Stewart. The item and signature are in excellent condition. Jonathan is a former NFL running back who played at University of Oregon before being picked 1st round in the 2008 NFL Draft. Most of his NFL career was spent with the Carolina Panthers. AUTHENTICATION: The item is accompanied by a Certificate of Authenticity - Serial Numbered and Databased Hologram - Picture of Jonathan from the signing