Catalogue entry no. 109 by Max Loehr:
109 Slit Disk (Chüeh)
Approximately circular disk with a biconical perforation placed off center and a radial slit running from the perforation to the edge. Concentric grooves in groups of two and three around the perforation, reminiscent of the grooves on the collared disks Nos. 102 and 103. Calcified, whitish jade; only a few spots of the original dark green color remain. Shang or Western Chou.