cover 1871 (Sept.) neat U5 to England via San Francisco, bearing 1861-62 3c. rose (2) and 1870-71 N.B.N.C. (no grill) 10c. cancelled by circle of wedges and showing light "P.O.D. U.S. CON. GENL./SHANGHAI" c.d.s. and bold "SAN FRANCISCO CAL/PAID" c.d.s. in magenta on face. A rare franking; some minor gum staining around adhesives. Photo