Late 19th-century (1850-1870) Japanese export fan. This fan has a double leaf painted with a different design on either side. Ivory encrusted with gemstones (birds and shippomon motif). Painting by ukiyo-e artist and  printmaker Katsushika Isai (1821–1880) represents a riverside landscape with figures; birds and flowers on the reverse. Signed: Isai ga (為斎画) - "Painted by Isai".