Autograph is authenticated by James Spence Authentication (JSA). Comes with JSA certificate of authenticity and matching sticker verified on their website and COA with same # on it.JSA is one of the world's leading authenticator of autographs. It is a "witness" COA, meaning a representative from JSA was present for the signing with Hamels and witnessed him signing your item. We are more than willing to help. The item "Cole Hamels Phillies Autographed 2008 World Series MVP Baseball JSA COA + Case" is in sale since Tuesday, December 11, 2018. This item is in the category "Sports Mem, Cards & Fan Shop\Autographs-Original\Baseball-MLB\Balls". The seller is "bepowers33" and is located in Lee's Summit, Missouri. This item can be shipped worldwide.