1914-15 'GRI 5d' 5mm opt DNG Yacht 50pf black & purple on buff (6th setting, Pos 5). VF fresh MLH. Mi 10II, SG 25 cat £325+, plus premium for this rare setting. Only total 569 printed. 2021 Ceremuga AIEP photo cert. (P) (Image1)

Estimate AU$350

1915 'GRI 3d' opt Kawieng (Deutsch-Neuguinea) sans serif registration label no.824. V-VF UN. Mi 16dI, SG 37 cat £1000. Very rare with only around 100 printed & certificate can be obtained on request. (P) (Image1)

Estimate AU$1,000

1914? Cover franked Kangaroo 1d red perf OS, tied by Herbertshoh s/l violet cancel. Endorsed UL 'Herbertshohe Garrison'. To Sydney with indistinct 'Sydney DE 14' machine pmk. Very rare provisional usage. (P) (Image1)

Estimate AU$1,500

1914 use of formula German PPC 'Gruss Aus Ralum-Bismarck Archipel' with 3 views, franked Kangaroo 1d red perf OS, tied by 2-line '*Rabaul* NOV 9 1914' in violet, To Sydney. Very rare provisional usage. (P) (Image1)

Estimate AU$1,500