A CHINESE IRON RED-DECORATED `THREE PURITY TEA POEM` BOWL Six-character Qianlong mark and possibly of the period With rounded sides rising from a cylindrical foot to an everted rim, the exterior with the poem ` sanqing cha ` written between two bands of reverse-decorated ruyi -heads, painted to the well with pine, prunus and fruiting finger citron branches, six-character Qianlong mark to the base, 11.4cm diameter 描紅三清茶詩茶碗