A Detroit Lions Throwback Authentic NFL Helmet hand signed by Calvin Johnson. The item and signature are in excellent condition. Calvin was a 2x All-American at Georgia Tech and was selected second overall by the Detroit Lions in the 2007 NFL Draft. Calvin is regarded as one of the greatest wide receivers of all time. AUTHENTICATION: -- Certificate of Authenticity -- Serial Numbered and Databased Hologram -- *** uses professional lighting for our product images that may show reflections.