Autograph is signed with a Black Sharpie Pen. Autographs were Obtained in person at the following: Spring Training Practices and Games, Hotels and Signings, and other Sporting Events. Each Autograph includes a Certificate of Authenticity and is 100% Original and Authentic. A COA from All Star Collectibles will be included with this item to guarantee authenticity of the signature included.The autographs on this item have been personally obtained by myself and I guarantee the authenticity of these autographs, as they will pass any third party examination. Such as PSA, GAI, JSA etc.