In approximately 1905, proof printings of the 1900 Yacht Issues were printed on paper with a lozenge watermark.
Postmarks of Deutsch-Neuguinea
On 17 October 1914, the Commonwealth forces occupying German New Guinea issued their first overprinted stamps.
These British Occupation Issues are German New Guinea registration labels overprinted “G.R.I. / 3d.”, with a new value of 3 Pence.
Shown below are the stamps of the GermanStamps.net Collection on the physical album pages.