1. Bought from Pa Ku Cha, China. For price, see Original Miscellaneous List, p. 94. $40.
2. (Undated Folder Sheet note) Original attribution: Chinese. Han 漢 or Chou [Zhou] 周. See further, S.I. 348, Appendix IV.
3. (Isabel Ingram Mayer, 1945) Chou [Zhou] 周 dynasty.
4. (Thomas Lawton, 1978) Attribution changed from Chou [Zhou] 周 to Neolithic. See Folder Sheet for F1917.19.
5. (Stephen Allee per Keith Wilson, February 4, 2008) On this date entered: Period One (Late Neolithic period), Date (ca. 5000--ca. 1700 BCE), Artist (Liangzhu 良渚 culture), Title, Object name, Geographical region (Lake Tai 太湖 region); plus Description per Jenny F. So and Dimensions per Christine Lee, from Jade Project Database. Added designation "nephrite" to Medium as per Elisabeth West Fitzhugh, as determined by x ray diffraction March 1958, and confirmed by Wen Guang 聞廣, as determined by infrared spectroscopy June 1997.
6. (Jeffrey Smith per Keith Wilson, July 17, 2008) Ceremonial Objects added as secondary classification.
7. (Jeffrey Smith, April 13, 2016) Transferred from Description: (Jenny So, from Jade Project Database) Deep mottled brown. Biconical hole with ledge at meeting point of drill bits; centered on one face only. Regularly rounded shape, uneven thickness. Surface very pitted and much altered.
(File folder) Perforated disc of the type "bi." Bored from both sides, leaving a pronounced median ridge. Rich mottled browns with excessive white disintegration, one area near rim completely decomposed on both sides. Proportions irregular. Surface rough with cracks and pits of decomposition. Rim broken and chipped. Box. Neg. No. 373B4
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