China - U.S. Offices, 1887 "U.S. Postal Agency Shanghai, Aug 19, 87". Purple oval postmark on cover to Ohio, grid canceling 1882, 5¢ yellow brown (s.e.), red San Francisco entry and receiving backstamps, cover with light tone spot on reverse, otherwise Very Fine, a nice strike of the Shanghai oval postmark. Scott No. 205  Estimate $100 - 150. $0 (Image)