Ceramic vase in the shape of a bottle

Unique ceramic vase. Stoneware, light gray shard. Semi-spherical body, cylindrical neck, protruding rim. Light and dark brown ash glaze; hand-painted, stylized leaf or bamboo decoration in reddish-brown. Workshop markings "KERSTAN KANDERN" and "K", as well as a brush mark with the date "Kerstan 1981" in dark brown. Height 17.5 cm. Unique ceramic bottle vase created by German studio potter Horst Kerstan. Signed and dated 1981. Kandern. Horst Kerstan. Dated 1981.