Catalogue entry no. 531 by Max Loehr:
531 Ornate Disk
Thin, translucent disk of a pale yellowish green color with creamy white calcified spots. The design is similar to that of No. 530, except that the outer zone is much more narrow, and instead of four “bucraniums” shows only three; moreover, these heads and appended scrolls with crossing wings are executed by engraved lines of an even thinness. The pattern of relieved hexagons consist of much smaller units here, and lacks the engraved spirals. In addition to the rope-like circle dividing the main zones of décor, a second encircles the inner edge. This disk, unlike No. 530, was executed with great care. Western Han(?).