China, eastern Zhou dynasty, diameter 7.2 cm.
Pale celadon jade disc decorated with two pairs of mythical birds. Minor blackish and brown inclusions.
Provenance: Old Austrian-Chinese private collection, acquired before 1980. Zacke, Vienna, June 2011, lot 25. German private collection.
Published in: F. Salviati/W. Zacken, 4000 Years of Chinese Archaic Jades, Vienna 2017, p 208 f.