A PAIR OF DATED BLUE AND WHITE BOWLS AND COVERS painted around the exterior with four-character medallions shan gao chang shui, high mountain and long river, reserved on a scrolling lotus ground beneath the Eight Buddhist Emblems, bajixiang, within bands of stiff lappets and ruyi-heads, the centre of the interior with a shou medallion beneath further ruyi-heads, the covers similarly decorated, seven-character mark Daoguang Ding Wei Wen Shan Zhi, corresponding to AD1847 and of the period