Qianlong seal mark and of the periodThe well-potted body with rounded sides resting on a short slightly tapering circular foot, boldly painted in vibrant tones cobalt-blue tones with simulated 'heaped and piled' effect, the cavetto with a large full-face five-clawed winged-dragon pursuing the flaming pearl of wisdom, amidst dense leafy peony scrolls, the generously proportioned well superbly painted with two striding dragons amidst meandering lotus scrolls, all beneath the rim with a band of crashing and swirling waves, the reverse similarly decorated with two striding dragons amidst a blooming peony scroll, the base with a six-character zhuanshu seal mark in underglaze blue. 51.3cm (20 1/4in) dia