1. Bought from K. T. Wong [Wang Jiantang] 王鑑堂, of Shanghai 上海, in New York. For price, see Original Miscellaneous List, p. 315. $150.
2. (Undated Folder Sheet note) Original attribution: Chinese. Chou [Zhou] 周. See further, S.I. 1361, Appendix LX.
3. (Isabel Ingram Mayer, 1945) Chou [Zhou] 周 dynasty. For discussion of type, see Folder F1939.14, note 3.
4. (Undated Folder Sheet note) Sp. G. is 2.927.
5. (Thomas Lawton, 1978) Attribution changed from Chou [Zhou] 周 to Shang 商.
6. (Jeffrey Smith per Keith Wilson, July 8, 2008) Ceremonial object added as secondary classification.
7. (Susan Kitsoulis per Keith Wilson, June 14, 2010) Object name changed from "Disk (bi 璧)" to "Ceremonial object."
8. (Jeffrey Smith per Janet Douglas, July 21, 2010) Nephrite added as modifier to existing medium of "jade" based on conservation analysis.
9. (Najiba Choudhury per Keith Wilson, August 2, 2017) Title changed from "Disk (bi)" to "Disk (bi 璧)"; Period One changed from "Shang dynasty" to "Late Neolithic period"; added Chinese Translation by Jingmin Zhang; and Date changed from "ca. 1600-1050 BCE" to "ca. 3000-ca.1700 BCE".
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