Catalogue entry no. 589 by Max Loehr:
589 Small Disk with a Different Pattern for Each Side
Sturdy piece of a dull greenish white jade with light brown markings. Unusually small perforation. One side is decorated with round dots arranged in three concentric zones; the interstices are marked by incompletely ground-off furrows, running in all directions. The other side shows two concentric rows of C -shaped spirals on a slightly unfinished surface. Probably post-Han.