4 plates with so-called sea-aged skin (Chinese hailaoci), China, Qing dynasty (1644-1912), 19th century, Porcelain with cobalt blue underglaze painting, all plates have in common various qualities of the hailaoci (sea-aged skin), i.e. the rough surface after many years of use. the rough surface after the porcelain ware has remained at the bottom of the sea for many years, ; two plates with Taihu stones between peony and magnolia; one plate with garden stone, chrysanthemum and bamboo, two-character mark on the bottom; one plate with abstracted character shou(long life) in the centre surrounded by four crabs, 1 chip backwards on the rim; diameters from 10,9 to 18,5cm