A group of four jade plaques


All of similar thin rectangular shape, all displaying a calligraphic inscription bearing a zigang signature within an archaistic border, three of the four reversed by a figural tableau within a similar border, the fourth reversed by two birds within rocky fronds of prunus and bamboo; the colors of the stone varied hues of grayish to greenish white. 2 to 2 5/8in (5 to 6.7cm) tall