When I've had a bit of spare time I looked for images and information about Norwegian and other Scandinavian glass. Hadeland seems to be the biggest and oldest producer in Norway, it is celebrated as the country's oldest company with continuous production. Sweden appears to have the biggest glass industry.
I've found references and images of antique glass, but not many, and much more of "modernist" looking pieces from the 60s. Frustratingly I haven't found a single image of a trinket set or anything else from the period in between, yet.
Perhaps no-one collects or is interested in glass of that the period, strange if so, as if this is anything to go by, it was well designed and produced. I imagine a set would have been quite a sight if one ever existed.
The seller did mention that people tended "to buy local" because of high import tariffs so presumably someone made a lot of domestic glassware between 1900 -1960s and if this is a "sample" of the quality, I would have thought it well worth keeping.
Looking around my other pieces of glass it does have a passing resemblance to an un-identified green vase I mentioned on another thread but I can't remember which, other than it was about a textured finish on a trinket set.