German New Guinea, in particular, issued its own distinctive stamps between 1888 and 1914. These stamps often featured images of local scenes, native people, and German imperial symbols. They are highly sought after by collectors due to their historical significance and scarcity.

Following World War I, the League of Nations granted a mandate for the administration of German New Guinea to Australia, leading to the establishment of the Territory of New Guinea. Australian administration brought about changes in the postal system, including the introduction of stamps featuring Australian motifs alongside local imagery.