1914-15 'GRI 1d' 6mm opt DNG Yacht 3pf brown, variety '1' for 'I'. VFU, s/l 'Rabaul Oct 22 1914' violet pmk. Mi 1I(var), SG 1a cat £2250. Extremely rare with only several known in used condition. Certificate can be obtained on request. (P) (Image1)

Estimate AU$2,500

1914-15 'GRI 1s' 4mm opt DNG Yacht 1Mk carmine. M, small thin, F-VF appearance. Mi 12I, SG 12 cat £3500. Only 128 printed. Certificate can be obtained on request. (P) (Image1)

Estimate AU$1,700

1914-15 GRI 3s, 3½mm DNG opt Yacht 3Mk violet-black. VF UN. Mi 14I, SG 14 cat £5500. Only 87 printed. 1949 BPA photo cert, while new AIEP certificate can be obtained on request. (P) (Image1)

Estimate AU$4,500

1914-15 'GRI 1d' 5mm opt DNG Yacht 5pf green. Superb fresh MNH. Mi 2II cat €30. SG 17 cat £35 for M, should be at least double, £70 MNH. (Image1)

Estimate AU$70

1914-15 'GRI 5d' 5mm opt Marshalls Yacht 50pf black & purple on buff. VF fresh M. Mi 8II, SG 57 cat £300. Only 599 printed. (P) (Image1)

Estimate AU$300

1914 Stampless cover endorsed' Garrison Rabaul' & 'No Stamps procurable'. To Sydney with '1D' in circle h/s & 1d Postage Due with barred oval '376' pmk affixed, machine b/s of Nov 1914. SG D78, ACSC D96. Very rare early usage. (P) (Image1)

Estimate AU$1,800