1914, 2d grey kangaroo punctured with small 'OS' on fragment, tied by double-line handstamp RABAUL NOV.18 1914, in violet (Powell #49c, rated F). Fine condition. Very rare postmark - recorded usage only in November 1914! (Image)

1915, 2d grey and 6d ultramarine kangaroo, both punctured with small 'OS', together with New Guinea 1d red KGV on fragment, tied by oval RABAUL / NEW BRITAIN, JUN.18 1915, h/s in violet (Powell #53). F/VF condition. Scarce mixed franking, obviously used on commercial mail! (Image)