1926-27 Aguilitas #823 featuring Negro Leaguer, Bienvenido "Hooks" Jimenez. Graded a 60 by SGC. According to their pop report, there have been 5 examples of this card graded. A 20, two 30s, a 40, and an 80. You'll notice there's no 60, in spite of fairly convincing evidence that one was, in fact, graded a 60. There is obviously an error in the pop report, but does this mean they simply forgot to add the 60, or did they mistakenly enter an "80" when they meant to enter a "60," making this the highest graded example? It's one of life's great mysteries.