Bought this recently from Germany, but the threads on the lighting parts lead me to believe this isn't German in origin. One of the joys of old German lighting is that no matter how old the parts are, they'll almost always work with new metric parts - this lamp, however, was a pain in the backside to bring back into use.
I can't find anything particularly similar, but it's very well made and really quite nice.
Any help gratefully received.