Thank you very much for your informative reply.
No signature and does not appear to be shortened. No papers. It was given do a shipbroker in 1938 and he brought it back to Norway in 1939. According to the son, it has always been sitting on the fire place.. Some pictures attached. Full length is approx 93 cm (36 1/2 inches). I would hate to sell a valuable sword here in Norway if it could be sold abroad for a great deal more!
Kristian