This official major league hof logo baseball has been hand signed by ken griffey jr.. griffey added the rare inscription "97 mvp" to commemorate his mvp season. this autograph is guaranteed authentic, and includes an individually numbered tristar authentic hologram. each autograph is guaranteed authentic, and includes an individually numbered tristar authentic hologram.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: tristar productions authenticated history of item: ken griffey jr. has signed this item in the presence of a representative from tristar productions. 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!