German New Guinea 1898 Overprint Postal Stationery Ei P1 Ei P2 Ei P3 (front) Ei P3 (rear) Ei P4 (front) Ei P4 (rear) The first postal stationery produced especially for German New Guinea were overprinted versions of German Empire issues. Set Date(s) 1898 1898 Overprint Postal Stationery Ei P1 Ei P2 Ei P3 (front) Ei P3 (rear) Ei P4 (front) Ei P4 (rear) The first postal stationery produced especially for German New Guinea were overprinted versions of German Empire issues. Set Date(s) 1898