Song/Yuan dynasty Potted with deep rounded sides rising from a tapered foot ring, covered overall with a sky-blue glaze, thinning to a buff tone at the rim, the interior lightly crackled, the exterior almost entirely splashed with a brilliant purple, the thick glaze stopping just above the neatly-cut foot ring, the dark-brown body showing at the foot beneath a dollop of glaze. 4 1/2in (11.5cm) diameter