c. 1876–1888
David-Andersen
Full early name and old city name distinguish it from later D-A and NORWAY layouts.
Country guide
Norwegian silver hallmarks
Norwegian silver hallmarks may include NM for Norsk Mønster, meaning Norwegian design. A separate maker signature can identify the workshop.
Distinctive marks and standards
830S means 83% silver and 925S means 92.5%. NM can denote Norsk Mønster, Norwegian design, rather than metal fineness. Thorvald Marthinsen’s goblet device is an example of a separate maker emblem.
What to check next
Keep the S with its number and compare the maker signature independently. A Norwegian design mark is not a British date letter. Marks such as D-A or a named workshop can narrow the maker search.
