This undated Masters flag contains a huge, full-signature autograph of 2015 Masters Champ Jordan Spieth. If you follow autograph collecting at all, you have surely noticed how Spieth doesn't sign this way any more. His autographs of the past couple years have become small, abbreviated, and incredibly sloppy. It has caused these early full-signature examples to be coveted by collectors.
Certificate of Authenticity from Green Jacket Auctions (GJA)