A fine blue and white octolobed bowl 15th Century

very finely potted of octolobed section, the curved sides resting on a tapered foot rising to the foliate rim, well painted in varying shades of cobalt-blue to the interior with a central circular medallion enclosing a fish swimming amid pondweed, encircled by a wave border, below a trelliswork diaper band of conforming shape at the rim, the exterior with the bajixiang borne by eight lotus blooms on a meandering leafy stem below a crashing wave band at the rim and above a classic scroll band at the foot