Zitan, Brushpot, 18th century,

Chinese Zitan Brushpot, 18th Century. photo courtesy Doyle New York

Of natural irregular cylindrical form, the thick walls with a dark rich patina. Height 7 1/2 inches. Estimate $12,000-18,000

Doyle New York. Asian Works of Art. Monday, March 21, 2011 www.doylenewyork.com