或東漢 出廓龍紋黃玉璧 The circular disc is carved to the center in openwork with pair of chilong,both sides of the disc around the center carved with a field of raised comma spirals within inner and outer raised borders. It is surmounted to the top with four well carved mythical beasts. The stone is of mottled yellow and russet tone with some white calcified areas. Eastern Han Dynasty period or later. Height: 5 7/8 in (15.1 cm) Length: 4 7/8 in (12.1 cm) Width: 3/8 in (0.7 cm)