Riddell Packers Speed mini helmet signed by Green Bay Packers star LB Clay Matthews. MINT Signature in black sharpie. Matthews added his number "52". 100% authentic. Comes with JSA COA (Certificate of Authenticity) and matching numerical sticker. See our overflowing feedback. Guaranteed 100% authentic. All questions answered promptly. Buyer pays $8.95 for secure insured shipping. See my other items for more unique Packers memorabilia.