Welcome to the Board.
You will see that I have (with my Moderator hat on) changed the title of your thread and moved it into the Scandinavian forum, as the main ID is known. I have also deleted the duplicate topic you posted in the USA forum. Having the same post in more than one place gets very confusing - Mods will move the one post around according to need as information is added.
Hopefully, one of the folks knowledgeable on Scandi items will soon come up with the answer as to what the items are. (They look a bit like "bronze age torques" to me, but I really know nothing of this sort of thing.)