"4" with, on reverse, "SINGAPORE/P.O." and Hong Kong transit (23.11) datestamps. Photo" /> cover 1867 (23 Nov.) entire from Singapore to Shanghai, bearing 3c. on 1a. strip of three and a single tied and cancelled somewhat heavily by individual strikes of the "B/172" obliterator, showing red crayon<I> "4"</I> with, on reverse, "SINGAPORE/P.O." and Hong Kong transit (23.11) datestamps. Photo | Christie's