The circular bowl on vertical foot, the exterior with four roundels reading wan shou wu jiang ('a long life without end') in seal script on a cobalt blue ground, all surrounded by lotus scroll, below a border of archaic kui-dragon scrolls, lotus lappet border above the foot, the underside incised with a four-character mark, zi sun yong bao ('treasured forever by sons and grandsons') in a double square, traces of gilding.