1904 Postage Due 1st London print, 1/2c to 30c complete set of 8, mint and minor toning, plus 1911 1c brown, Chan D7-D15. Photo (Image1)

Est. HK$800-1,000

1904 Postage Due 1st London print, 20c gutter block of 12, tied by bilingual 'CHUNGKING' cds, a few minor toned spots. Chan D13. Photo (Image1)

Est. HK$500-600

1911 Postage Due 2nd London print, 1c brown in complete pane, a small tear at the left bottom, unmounted. Chan D15. Photo (Image1)

Est. HK$1,000-1,200

1911 Postage Due 2nd London print, 1c brown in complete pane, stuck on paper, unused. Chan D15. Photo (Image1)

Est. HK$1,000-1,200

1911 Postage Due 2nd London print, 2c brown, block of 10, 15 and 25, all tied by bilingual 'KONGMOON' cds. Chan D16. Photo (Image1)

Est. HK$800-1,000

1911 Postage Due 2nd London print, prepared for use, but not issued, 4c brown, mint full original gum lightly hinged, small thin at the left. Chan DU4. Photo (Image1)

Est. HK$5,000-6,000

1911 Postage Due 2nd London print, prepared for use, but not issued, 4c brown block of 4, each with punch hole, mint and no gum. Chan DU4. Photo (Image1)

Est. HK$3,000-3,500

1911 Postage Due 2nd London print, prepared for use, but not issued, 4c brown gutter pair with one margin imperforate between variety, each with punch hole, mint and no gum. Rare. Chan DU4. Photo (Image1)

Est. HK$8,000-10,000