Disc

A jade 'chilong' disc,

A jade 'chilong' disc, Han dynasty or later 漢或以後 出廓螭龍玉環

A yellow jade bi disc

宋至明 黃玉蒲紋環

A grey and brown jade notched disc,

A grey and brown jade notched disc, Shang dynasty 商 灰玉牙璧

A calcified jade collared disc

商 有領玉璧