danish lamp makers mark id  

I believe the stamped N with...
I believe the stamped N with circle around is Norvegian stamp of aprovement.
Pehaps this is i lamp made i Norway, since no other stamp.
I think Denmark is D or DK, Sweden is S.
I googled and saw a lamp with downpull with looked similar.
A tip when searcing for foreign products is to type in the origin language.
In this example
Copper lamp is kobberlampe or kobber lampe, search og images and scroll down, maybe youll find what youre looking for..

danish lamp makers mark id
N = Nordisk Solar

Nordisk Solar
I thought it was Nordisk Solar but I was sure the logo was different thanks for the info

Luxo lamp
I have an anglepoise lamp with the "n" in a circle on one side and "Luxo Lamp" on the otherside (on the same part).