Catalogue entry no. 377 by Max Loehr:
377 Trapezoidal Plaque
Cream, tan, and light gray jade with blackish spots, in the shape of a thin trapezoidal plaque. From the lower edge projects a recessed strip with two biconical drill-holes. One side is given the appearance of an extremely simplified face with eyes, consisting of two sunken concentric circles; a wedge-shaped part in the center; two sets of three horizontal grooves parallel to the upper edge; and two involute curls carved at the lower corners. Near the top of the center wedge there is a third perforation. On the opposite side is an engraving of a face of very different character, more complex and curvilinear, that would seem to have been added later. The face, in contrast to the other, is oriented so that the nose and lower portion of the face rest along the widest part of the trapezoid. Early Eastern Chou(?)