1. (Jeffrey Smith per Keith Wilson, July 1, 2008) Jewelry added as secondary classification.
2. (Susan Kitsoulis per Keith Wilson, June 14, 2010) Object name changed from "Pendant: animal head mask" to "Jewelry." Title from "Pendant (pei 佩): animal head mask" to "Pendant (pei 佩) in the form of an animal head mask."
3. (Jeffrey Smith per Janet Douglas, June 17, 2010) Nephrite added as modifier to existing medium of "jade" based on conservation analysis.
4. (Najiba Choudhury per Keith Wilson, May 10, 2018) Title changed from "Pendant (pei) in the form of an animal head mask" to "Pendant in the form of a mask, probably reworked from a tube (cong 琮)"; period one changed from "Shang dynasty" to "Late Shang dynasty"; period two added "Anyang period"; geography changed from "China" to "China, probably Henan province, Anyang"; object name changed from "jewerly" to "Pendant"; date changed from "ca. 12th-11th century BCE" to "ca. 1300-ca. 1050 BCE"; added Chinese object caption by Jingmin Zhang; and added the following to the description field, "Mask with convex surface. Pierced jaws and horns. Eye, jaw, and horns with spiral decoration are in doubly engraved line-relief. Engraved diamond on forehead. Reverse undecorated. Translucent green jade, brown marking on one edge. (Traces of earth; minor flaws.)"
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