LOCATION Found by Arthes and Lopez; whether lying against the base of Structure A-1O or fallen on its face is unknown. It had been set into the west side of A-lO, just south of the projecting lower stairway and landing. It remains where found.
CONDITION One large full-width portion survives, lacking top and bottom, and representing perhaps two-thirds of the original slab. During the Seibal Project a fragment from the upper-left corner was found and cemented in place. Much of the carved surface has flaked off; loss of detail due to erosion is minor.
SHAPE Sides tapering somewhat towards the top. The front surface is dressed flat; the sides are beveled, making the back narrower than the front.
DRAWING Graham, based on a field drawing corrected by artificial light.