Another favorite signed baseball of mine. I found this on eBay a few years ago and had to have it. I had recently been rewatching the old Home Run Derby show, and the Killebrew/Mantle matchup was a favorite episode. How great is that show by the way? I love getting to see the personalities of the players of that era in a laid back setting. Anyways, I love having a piece linking these two all time greats.