Rob gronkowski autographed new england patriots/arizona wildcats fsm custom painted mash up speed flex authentic helmet w/shocc visor radtke sportsthis new england patriots / arizona wildcats fsm custom painted authentic speed flex helmet - ripped edition - has been personally hand-signed by rob gronkowski. it comes with an individually numbered, tamper-evident hologram from radtke authentic. to ensure authenticity, the hologram can be reviewed online. this process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud. this helmet has been hand painted by fsm. includes hologram! rob gronkowski's signature is guaranteed authentic through the radtke hologram system. money back guarantee! if for any reason you are not completely satisfied with the quality or authenticity of your purchase, we will gladly give you a full refund or exchange, whichever you prefer up to 30 days after purchase. please feel free to e-mail us with any questions. good luck bidding!!! authenticator pre-certified authenticator: radtke authenticated history of item: rob gronkowski has signed this item in the presence of a representative from radtke. describe how you came to possess this item: super sports center is a fully authorized dealer for upper deck authenticated as well as mounted memories and steiner sports. other information about you and / or the item: super sports center strives to deliver the most authentic in sports memorabilia from trusted companies like mounted memories, steiner sports and upper deck authenticated. if it exists, we can find it for you!