A CHINESE SEPIA AND IRON-RED DECORATED DOUBLE GOURD VASE. Qing Dynasty, 18th/19th century. The rectangular-section body painted to two sides with figures and pagodas in a mountainous landscape, the two remaining sides with rockery and iron-red bamboo sprays, 14.5cm H. Provenance: Hancock, 37 Bury Street, St. James's, SW1 [label]  During the Yongzheng period, technological developments allowed for the development of black ink which allowed for the first time, designs drawn from landscape paintings to be fully applied to porcelain. Indeed, Cai Hebi in the introduction to the Special Exhibition of Ch’ing Dynasty Enamelled Porcelains of the Imperial Ateliers, National Palace Museum, Taipei, 1992, p 12, quotes a 1732 edit in which the Emperor notes ‘the enamel paintings in sepia are all exceedingly fine’. For a brush pot with sepia landscape design dated to the Yongzheng period see Kangxi, Yongzheng, Qianlong: Qing Porcelain from the Palace Museum Collection, 1989, pl 68. 清十八 / 十九世紀   礬紅墨彩繪山水圖紋葫蘆扁瓶 來源：漢考克藏標。