Lionel Messi Signed Soccer Ball Argentina PSA/DNA COA. This Lionel Messi autographed Soccer Ball has been personally hand-signed by Lionel Messi. Like all pieces on our site, this item is guaranteed 100% authentic. Value will likely increase so take advantage of this. It comes fully certified with a PSA/DNA Certificate of Authenticity. We also carry additional Soccer Memorabilia and other Argentina Autographs.