The works of Karl E. Nilsen are rarely sold on auctions, therefore the
action firms have no history of valuing his works. But if you want to
ask someone who is familiar with his works about the artistic value of
them, you could contact Anders Elvesta...
Thank you for correcting the link. Anyone interested in Karl Erik
Nilsen's art, can contact me on Facebook. Or view some more images in
the catalogue I made for a memorial exhibition in Oslo. Kari
Karl E. Nilsen was my late husband. I can confirm that the prints you
display is his work. You can contact me on this site
https://www.facebook.com/KalleNilsenBilledkunst/ which I set up for his
work. I live in Oslo. Kari
