Deliberately with a distinctive green Sharpie pen, Sonny Gray signed this printing plate on September 6, 2014 in Burlingame, CA after the game. See pics of Sonny Gray signing these one-of-a-kind collectibles.
The autograph will 10000% pass JSA or PSA. If it doesn't, there is something wrong with your authenticator because here is an undeniable photo from the signing.