I believe I tried it at Smather's place (Four Fillies farm) years ago. I think Crafton said it was introduced to Florida by Frank Smathers. It was green skinned and almost white fleshed and wasn't very good. Had some resinous flavor and not overly sweet. It didn't have fiber but the flesh was firm. It was totally green on the outside. Now that I look at the Fairchild book, it is rated Fair to Good (on the Excellent, Good, Fair, Poor scale). That's the same as Tommy Atkins. I don't rememer the tree as being any different in size than the rest of the trees there. But, I am sure they were all well pruned. I think "exceptional quality" might not apply to this cultivar. Of course, the fruit I had might have been an aberation, but Crafton didn;t say that it was when we tried it.
Harry