The jade, Ming dynasty; the silver, 19th century The circular jade plaque reticulated with a writhing dragon amid clouds, against a secondary ground of scrolling vines, accented with hints of russet, set into the top of the tall cylindrical cover, the side chased with scrolling peony between bands of key fret, the plain cylindrical box with a lip around the rim and fitted with another cover, the foot impressed with a seal reading Shengyuan. 1 5/8in (4.2cm) diameter of plaque