Advertising Cover - Gunerius Pettersen with trade mark machine cancel.
NO4000 Norway Postal Stationery Cards #1 and #2 - 1980 reprints .
NO4001 Norway Postal Stationery Card #1 - 1872
NO4001 Norway Private Order Advertising Postal Card - ca.1888
NO4001.1 Norway Postal Stationery, 2sk Envelope #1 - marked SPECIMEN.