cover 1870 (21 Feb.) entire to London, bearing 1863-71 CC 4c. grey (2), 24c. deep green and 48c. rose (2), all cancelled "B62" and with small faults, showing faint oval "MEDIOS & CO/HONG KONG" forwarding agent's cachet on reverse; the entire with some faults including heavy horizontal filing crease. A remarkable quadruple rate franking. Photo