Blue enamel Qianlong four-character mark and of the period The copper body of oval section subtly enamelled with a continuous scene of two bats amidst clouds, surrounded by bamboo and lingzhi fungus, all between lappets and raised gilt borders at the shoulder and above the foot, the waisted neck with a collar of alternating large and small lappets reserved on a yellow ground, the foot and mouth encircled with a key-fret scroll, the interior turquoise, the base with a blue enamel four-character mark within a double square, the rims gilt, box. 5.8cm (2 1/4in) high (2).