This helmet has been personally hand signed by Carl Eller with the inscription "1962 ALL AMERICAN, A963 ALL AMERICAN, 1962 ROSE BOWL, NAT. CHAMPS 61, CHOF 2006, MINNES." It comes with a tamper-evident label and a certificate of authenticity from James Spence Authentication. This process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud. SportsMemorabilia.com firmly stands behind every product offered on our site with a lifetime authenticity guarantee that each signature is 100% authentic.