A fine famille-rose yellow-ground medallion bowl mark and period of Qianlong

finely potted with deep rounded sides supported on a short straight foot rising to a slightly everted rim, finely and delicately painted in bright famille-rose enamels with four circular medallions enclosing the flowers of the Four Seasons, peony, chrysanthemum, lotus and prunus, each divided by formal leafy lotus sprigs, all reserved on a rich yellow ground, the interior decorated with five iron-red bats, the rim gilt, the base turquoise with a central square reserved in white for the six-character seal mark in underglaze-blue