Maybe we should make it clear what is what in Northern Europe. I shall try to make it short.
Lets start with the Baltic countries.
There are three of them i.e. Estonia, Latvia and Lithuania. Those countries ceased to exist as from 1795 being a part of the Russian Empire to the year 1920 when they became independent. From 1795 to 1920 the Russian marking system was used. In 1920 the became independent and it lasted to about 1940. What happen after that we all know. During those 20 years of independence they implemented their own hallmarks, a lion for Estonia, Milda for Latvia and Knight Vytis for Lithuania or actually Vilnius.
Then we have the Nordic countries. They are Finland, Sweden, Denmark, Norway and Iceland.
Sweden's hallmark is three crowns, Finland's one crown. Norway and Denmark are more difficult but they usually have a town mark. In addition all countries also carry maker's marks and year marks as well as fineness marks. Iceland we can forget in this connection.
What's left are the Scandinavian countries. Those are Sweden, Denmark and Norway. Scandinavia is only a part of the Nordic countries.
Now back to what I would call a "fish server". There is nothing in its marks indicating it to be made in any of the above mentioned countries. This is most obviously the reason why the "Nordic experts" stay silent, sorry.