This ball is a super RARE find!!! Signed by one of the greatest of ALL TIME, Mickey Mantle himself in the mid 50s we believe 54 or 55. We believe that is 100% the real deal, after having spent a lot of time researching the signatures of Mantle throughout his career and how it evolved to become the prestine iconic signature that most people associate with his autographed baseballs. We have had it appraised by several collectors of sports memorabilia. This balls estimated value if so is in the 1000s. There is no COA currently...however we are trying to 100% authenticate this amazing estate sale find. This ball is one of my personal favorites in our collection. I personally love the 1940s and baseball is and always will be my favorite American pastime. So we are not in a hurry to get rid of this one. We are however entertaining offers or just check back for more info later.