cover CHUNGKING: 1898 (7 Feb.) advice postcard to London, bearing China 1897 (small figures) 5c. on 5ca. cancelled by Chungking "dollar chop" in black, and Hong Kong 2c. carmine (2) applied and cancelled at Shanghai (25.2) with companion "dollar chop" (24.2) adjacent. Interesting message on reverse regarding the poor condition of a catalogue sent from London "...owing to a wreck en route!"; fine and unusual. Photo