. A marvellous piece. Holcombe Certificate (1994). Chan DU2, $160,000" /> Proof POSTAGE DUE: 1911 4c. brown, a Waterlow file sheet of one hundred (four panes of twenty-five), each with security punch hole and, as usual, without gum and stained, the interpanneau margin between the upper and lower panes is imperforate between, a pencil annotation in the upper margin records the date as<I> "13/12/1910 50,000"</I>. A marvellous piece. Holcombe Certificate (1994). Chan DU2, $160,000 | Christie's