A turquoise enamel bowl and cover, seal marks of Qianlong the deep rounded sides covered on the exterior with an opaque celeste blue enamel, the base of the interior painted in iron-red with five bats in flight reserved on the white ground, the matching shallow domed cover with a raised circular knop doubling as a foot when inverted, similarly painted with five iron-red bats on the white interior, the base of the bowl and the interior of the knop each inscribed with a six-character Qianliong seal mark in underglaze blue (2) 12.