The Century Oak is the sacred tree to Texas Aggies. Far and away, it's my best-seller. This magnificent old live oak sits just northwest of the Academics Building at the center of the campus. Generations of Aggies have had their photos taken beneath this tree. Many of the pens I have sold from this tree have gone to couples who became engaged beneath its branches. Note that the pens are all one-of-a-kind. There is considerable variation in color, knots and black-line spalting.