I don't know if this is going to be of any help, but I do have a Hadeland piece - a Benny Motzfeldt one with a Hadeland label - and it's quite different.
Basically the same shape, it is silver; the word "original" is written in small capital letters above the word Hadeland; there is the letter K in the middle, (where you have H); and in the third section it reads Norsk.
Underneath the piece is engraved Hadeland 8006. B.M. and there is a brown paper label - possibly
aged brown - it's hard to tell and there is something written on it in pencil, but I don't know what. I don't even know if it was an original label.
I've just peered at it with my closest closeup glasses- I think it might read 8006, then a bit under that which might read New or Moz or Nov or Had.
I am clueless as to what year it was made, but I would be interested in finding out.