The design of intertwined serpentine bodies terminating in either dragon or human-like heads on this unusual plaque is indicative of the varied and lively designs on jades during the middle and late Western Zhou period. Rubbings of several jade pendants dated to Middle Western Zhou, 10th century BC, from Shaanxi Fufeng Qiangjia, bearing similar designs are illustrated by J. Rawson, Chinese Jade from the Neolithic to the Qing, British Museum, 1995, p. 237, fig. 1. One especially of an intertwined dragon-head creature and a human-head creature has an irregular outline similar to the present plaque. Compare, also, the related plaque, also carved on only one side with the entwined bodies of two pairs of dragons and a phoenix, dated to Western Zhou, included in the exhibition, Chinese Archaic Jades from the Kwan Collection, Art Gallery, The Chinese University of Hong Kong, 1994, no. 136.