1. Bought from Lai Yuan and Company, New York. For price, see Original Miscellaneous List, p. 196.
2. (Undated Folder Sheet note) Original attribution: Han 漢. See further, S.I. 891, Appendix VII.
3. (Archibald Gibson Wenley, 1945) Late Chou [Zhou] 周 dynasty. A superb and delicate piece of tomb jade typifying the finest type of Late Chou [Zhou] 周 workmanship in material, proportion and artistic skill. For discussion of type, see Folder Sheet F1939.14, note 3.
4. (Undated Folder Sheet note) Sp. G. is 2.954.
5. (George Perkins Merrill, 1922) Jadeite.
6. (Thomas Lawton, 1978) Attribution changed from "Late Chou [Zhou] 周" to "Western Han 漢." This disk has been sliced from a thicker disk.
7. (Jeffrey Smith per Keith Wilson, July 8, 2008) "Ceremonial Object" added as secondary classification.
8. (Jeffrey Smith per Matthew Clarke, July 7, 2022) Medium changed from Jade (?) to Jade (nephrite).
9. (Najiba Choudhury per Keith Wilson, June 8, 2023) Title changed from "Ritual disk (bi)" to "Disk (bi) with raised hexagons arranged in a grid and birds, reworked"; Period One changed from "Western Han dynasty" to "Han dynasty"; Date changed from "206 BCE-9 CE" to "206 BCE-220 CE"; added Chinese Translation by Jingmin Zhang.
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