A very fine Yaozhou conical bowl
Northern Song Dynasty
The sharply-flaring bowl rising from a shallowly-recessed foot, fired slightly brown within the recess, the exterior vertically carved with 13 shallow grooves to form lobed panels mirrored in the interior as concave ribs rising from an unglazed central disc, all under a fine even rich very lustrous pale glaze, fitted box.
15.5cm (6 1/8in) diam. (2).