Long time lurker here but I seldom post. For what it is worth, I would feel more than confident that this is real. Very typical of his later in life signature style, after his first stroke. Further, it is the image of him meeting Babe Ruth and if I were a gambling man, I would lay good money on there being a Green Diamond hologram in the lower right corner. Many/most of these images were likely done at one sitting as the overwhelming majority bear signatures which are admittedly slightly a-typical but are themselves quite similar. I list some example links below:
http://www.ebay.com/itm/Beautiful-TE...#ht_500wt_1050
http://www.ebay.com/itm/TED-WILLIAMS...ht_2517wt_1263
http://www.ebay.com/itm/Ted-Williams...#ht_500wt_1284
http://www.ebay.com/itm/BABE-RUTH-ME...#ht_500wt_1284