2000
Reportedly excavated at Luoyang, Henan [1]
Charles Lang Freer, 2000
Charles Lang Freer, 1800
Duanfang, 1000
Charles Lang Freer, 1400
Charles Lang Freer, 500
Charles Lang Freer, 100
Charles Lang Freer, 1700
Charles Lang Freer, 1640
Charles Lang Freer, 1790