Late Shang Dynasty Of slender form rising to an elegantly flaring trumpet neck, the middle section and spreading foot cast with two taotie masks decorated with leiwen, divided and separated by vertical notched flanges, with a band of cicadas above the masks on the foot, all reserved on leiwen grounds, cast with a Bing Wu pictogram inside the foot, the greenish-grey patina with malachite encrustation. 25.5cm (10in) high.