THREE CHINESE ARCHAISTIC JADE BI DISCS, AND A CARVING OF A FROG,

THREE CHINESE ARCHAISTIC JADE BI DISCS, AND A CARVING OF A FROG,
the first bi russet jade carved with a taotie mask to each side; the second pale-greenish jade carved with band of ruyi-head scepters, bosses to reverse; the third mottled grey jade carved as two concentric circles
The first, the largest, 2¾in. (7cm.) diameter