I'm not at home with my collection right now and I'd like to try my Coquille's with a black light. My recollection is that that they don't react to uv light. So I would hold off on the Scandinavian right now, especially with what seems to be a green cast to the clear glass. I think I know the obvious Scandinavian, but there are far more people on the Board with much more knowledge. Didn't Erickson also make a version, for example? If I had to pick a Scandinavian suspect, I'd say Bergdala, as they did colour and usually used labels rather than engraving.
David