This Riddell NFL Authentic On-Field Helmet was signed by 4 time Super Bowl Champion, Three with the New England Patriots and 1 with he Tampa Bay Buccaneers, and sure fire Hall of Famer, Rob Gronkowski. This is the helmet that Gronkowski wears on-field. For authenticity purposes this item will be accompanied by a Radtke Sports Certificate of Authenicity along with a matching serial numbered hologram affixed to the helmet.
