This autographed Riddell Eclipse Alternate mini helmet has been personally hand-signed by Mark Gastineau, Joe Klecko, Marty Lyons and Abdul Salaan of the New York Jets. Together they formed the "New York Sack Exchange" defensive line. These autographs are certified by James Spence Authentication's (JSA) Witnessed Protection Program. That means that a JSA representative was present when this item was signed. The mini comes with the numbered hologram and matching Certificate of Authenticity.