1. (Jeffrey Smith per Keith Wilson, July 8, 2008) "Ceremonial Object" added as secondary classification.
2. (Stephen Allee, March 25, 2009) Jenny F. So, Jade Project Database, gives Date as "ca. 4th-3rd century BCE"; but as per Keith Wilson, current Date "5th-4th century BCE" is retained, while current Title "Ritual disk, Bi 璧" is changed to "Disk (bi 璧) with spirals," Object Name "Disk (bi) 璧" is changed to "Ceremonial object," and "Warring States period" is added to Period Two. Changed Medium "Jade" to "Jade (?)," as no scientific analysis is recorded. Added Measurements (Diam x D: 24.9 x 0.7; Diam [hole]: 8.3;) as per Christine Lee, Jade Project Database. Also added Source: "J. T. (Jun Tsei) Tai [Dai Runzhai] 戴潤齋, New York," and Description as per Jenny F. So, Jade Project Database.
3. (Jeffrey Smith per Matthew Clarke, July 25, 2022) Medium changed from Jade (?) to Jade (nephrite).
4. (Najiba Choudhury per Keith Wilson, June 5, 2023) Period One changed from "Late Eastern Zhou dynasty" to "Eastern Zhou dynasty"; Title changed from "Disk (bi) with spirals" to "Disk (bi) with raised uniform curls arranged in a grid"; Date changed from "5th-4th century BCE" to "475–221 BCE"; and added Chinese Translation by Jingmin Zhang.
Usage conditions apply
There are restrictions for re-using this image. For more information, visit the Smithsonian's Terms of Use page.
The information presented on this website may be revised and updated at any time as ongoing research progresses or as otherwise warranted. Pending any such revisions and updates, information on this site may be incomplete or inaccurate or may contain typographical errors. Neither the Smithsonian nor its regents, officers, employees, or agents make any representations about the accuracy, reliability, completeness, or timeliness of the information on the site. Use this site and the information provided on it subject to your own judgment. The National Museum of Asian Art welcomes information that would augment or clarify the ownership history of objects in their collections..