Ceramic vase in the shape of a bottle

Unique ceramic vase. Ceramic granite, light gray shard. Hemispherical body, cylindrical neck, protruding rim. Light and dark brown ash glaze; painted, stylized leaf or bamboo decor in reddish-brown color. Workshop marking "KERSTAN KANDERN" and "K", as well as a brush marking with the date "Kerstan 1981" in dark brown color. Height 17.5 cm. Unique bottle-shaped ceramic vase created by German studio potter Horst Kerstan. Signed and dated 1981. Kandern. Horst Kerstan. Date 1981.