A turquoise-ground 'famille-rose' charger seal mark of Daoguang robustly potted with shallow rounded sides and broad everted rim supported on a splayed foot, painted on the interior with iron-red bats and stylised floral sprays encircling a central shou character medallion, a pierced band of linked iron-red circles within a ruyi -head border around the gilt-edged rim, the exterior with a frieze of detached stylised lotus sprays, all reserved on the turquoise ground, the base inscribed with a six-character seal mark in iron red 40 cm