Of saucer shape, finely potted with shallow rounded sides, the interior painted in iron-red enamel with a lively five-clawed dragon writhing against a ground of underglaze-blue crashing waves, the exterior painted with nine iron-red dragons in various poses writhing above a blue tempestuous sea, between a band of demi-florets at the rim and double lines encircling the foot, the base inscribed with a six-character seal mark of Qianlong in underglaze blue. Period: Qianlong (1736-1795). Diameter: 17 cm.