United States Consulate, Ningpo, China, Apr 20, serrated oval handstamp on greenish cover bearing 1890, 5¢ chocolate tied by "U.S. Postal Agency, Shanghai, Apr. 25 '93" duplex to Boston, Mass., San Francisco (5.21) and Boston (5.26) backstamps; small edgetear at right, otherwise Very Fine and rare use from Ningpo. Scott No. 223  Estimate $400 - 600. $0 (Image)