Though earlier SGC-graded cards do not offer explanations for the AUTHENTIC grades, we suspect a slight trim along the top edge is a possibility here.  Left corners being a bit sharper than the right could suggest an issue with the left edge as well, but overall, the card is a visually pleasing one, with crisp registration and a bright red background offsetting the blue in Bob Beecher's uniform quite nicely.  The tougher Dockman & Sons reverse only adds to the desirability of the card.