cover CHINA: 1864 (12 Feb.) envelope to Shanghai, bearing 1859 5c. (2, one faulty) and 12½c. badly damaged pair, each cancelled by four ring "18", showing despatch and red London Paid (25.2) transit c.d.s. with, on reverse, Hong Kong c.d.s.; the cover with some light creases and other small faults. A very rare franking. Photo