Very nice notarized achievement sheet, 8 x 10, honoring the longest Yankee Stadium home run (hit by Mantle), bearing a photo of the feat, signed in black felt tip in a special signature area by Mantle. Framed to an overall size of 9.25 x 11.25, with a copy of a photo of Mantle taken at time of signing affixed to reverse. In very fine condition. Auction LOA Steve Grad/PSA/DNA and R&R COA.
