1. Bought from Abel William Bahr, London. For price, see Original Miscellaneous List, p. 106. $360.10 for 65 pieces of jade.
2. (Undated Folder Sheet note) Original attribution: Han 漢. See further, S.I. 362, Appendix IV.
3. (Isabel Ingram Mayer, 1945) Ch'ing [Qing] 清 dynasty reproduction of Han 漢 type.
4. (Undated Folder Sheet note) Sp. G. is 2.974. Nephrite.
5. (H. Elise Buckman, 1964) The Envelope File contained no further information and has now been destroyed.
6. (Thomas Lawton, 1978) Attribution changed from Ch'ing [Qing] 清 to Shang 商.
7. (Jeffrey Smith per Keith Wilson, July 8, 2008) Ceremonial object added as secondary classification.
8. (Stephen Allee, November 17, 2008) As per Jenny F. So, Jade Project Database, changed Period One from "Shang 商 dynasty" to "Shang 商 -- Western Zhou 周 dynasty;" changed Date from "1600--1050 BCE" to "1400--771 BCE." Added Abel William Bahr to Constituents: Source. Changed Title from "Ritual disk, Bi 璧" to "Disk (bi 璧)"; changed Object Name from "Disk (bi 璧)" to "Ceremonial object." Added Description as per Jenny F. So and Dimensions per Christine Lee, from Jade Project Database.
9. (Najiba Choudhury per Keith Wilson, August 2, 2017) Title changed from "Disk (bi)" to "Disk (bi 璧)"; period one changed from "Shang to Western Zhou dynasty" to "Probably Shang dynasty"; date changed from "1400-771 BCE" to "ca. 1600-1050 BCE"; medium changed from "Jade" to "Jade (nephrite)".
10. (Najiba Choudhury per Keith Wilson, August 2, 2018) Chinese Translation by Jingmin Zhang added.
Removed the following description, "(Jenny So, Jade Project Database) Evenly round and quite evenly thick. Mottled greenish brownish material; cf. F1917.81. Conical hole (?), drilled off center, now polished smooth and straight. (Freer file folder) Small perforated disc of the type "bi," semi-translucent, mottled greenish and brownish yellow; a beveled area on rim, one long crack." The following description added, "Small perforated disk of the type pi [bi] 璧; semitranslucent, mottled greenish and brownish yellow; a beveled area on rim, one long crack. (Jenny F. So, Jade Project Database) Evenly round and quite evenly thick. Mottled greenish brownish material; see F1917.81. Conical hole (?), drilled off center, now polished smooth and straight."
Added the following to the Description field, "Small perforated disk of the type pi [bi] 璧; semitranslucent, mottled greenish and brownish yellow; a beveled area on rim, one long crack. (Jenny F. So, Jade Project Database) Evenly round and quite evenly thick. Mottled greenish brownish material; see F1917.81. Conical hole (?), drilled off center, now polished smooth and straight."