Runar,
Thank you so much. I really appreciate the pictures, and I am happy to know a bit more about the gun. My intent is to pass it on to my nephew if he is interested. If not, I'll try to find a suitable home for it, preferably in Norway. But that will be some time from now, since I still have a few good years left in me and it has great sentimental value.
Unfortunately, I did not learn Norwegian from my bestefar. I have picked up a few words along the way, mostly from Norwegian colleagues. For the Norwegian passages in the pictures that you so kindly provided, I'll use Google Translate.
Brian