1. (Jeffrey Smith per Keith Wilson, July 8, 2008) "Ceremonial Object" added as secondary classification.
2. (Jeffrey Smith per Matthew Clarke, August 1, 2022) Medium changed from Jade to Jade (nephrite).
3. (Najiba Choudhury per Keith Wilson, June 8, 2023) Title changed from "Ritual disk (bi)" to "Disk (bi) with dragons and masks, redecorated"; Date changed from "3rd-1st century BCE" to "206 BCE-220 CE"; and added Chinese Translation by Jingmin Zhang.
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