Rawlings Official American League baseball. Hand-signed by Bert Blyleven (Minnesota Twins, Pittsburgh Pirates, Texas Rangers, Cleveland Indians, California Angels, HOF). Please note, the baseball is naturally toned.The autograph(s) includes an official PSA/DNA hologram and matching COA for authenticity purposes.Authentication: PSA COACheck out all the items in our Friendly Confines Collectibles store, Thanks for looking.