This autographed jersey has been personally hand-signed and inscribed by Karl Mecklenburg of the Denver Broncos. Mecklenburg added Orange Crush along with the bible verse "Phil 4:8" along with his signature.This autograph is certified by James Spence Authentication's (JSA) Witnessed Protection Program.That means that a JSA representative was present when this item was signed. It comes with the numbered hologram for Authenticity.