1. (Jeffrey Smith per Keith Wilson, July 8, 2008) "Ceremonial Object" added as secondary classification.
2. (Susan Kitsoulis per Keith Wilson, April 20, 2010) Object Name changed from "Disk (bi 璧)" to "Ceremonial Object."
3. (Jeffrey Smith per Matthew Clarke, August 1, 2022) Medium changed from Jade to Jade (nephrite).
4. (Najiba Choudhury per Keith Wilson, June 7, 2023) Title changed from "Disk (bi)" to "Disk (bi) with raised hexagons arranged in a grid and masks"; Period One changed from "Possibly Han dynasty" to "Forgery in the style of Han dynasty"; Date changed from "200 BCE-200 CE" to "20th century"; and added Chinese Translation by Jingmin Zhang.
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