This is a Rawlings official Major League baseball (the real deal they use in games) autographed by starting pitcher, #35 Cole Hamels. He signed this baseball boldly with a blue ball point pen, and has been professionally authenticated by one of the profession's leading 3rd party authentication services - JSA (James Spence Authentication). The item will come with the certificate of authenticity (COA) from JSA that matches the certificate # on the sticker they placed on the item. Visit www.spenceloa.com and enter your certificate # for signature verification!Rawlings