A Hall of Fame Proline Authentic NFL Helmet hand signed by Calvin Johnson. The item and signature are in excellent condition. In addition to signing his name, Calvin also inscribed "HOF 21" on the item. Calvin is a former NFL Wide Receiver. He was selected as 2nd overall pick in the 2007 NFL Draft by the Detroit Lions. AUTHENTICATION: the item is accompanied by a JSA Certificate of Authenticity - JSA Serial Numbered and Databased Hologram