I don't speak Swedisch, but the language has some vague similarities with Dutch. That and a bit of Google translation on various pages of Börnevasen makes me believe that they're discussing who actually designed the vase, made by Aseda. The opinion of at least one informed user seems to be that the design is by Borne Augustsson, and that not everything designed for Aseda in the 60s is by Bo Börgstrom.
The examples they are showing do show different lobes, maybe you can compare those? The Aseda vases seem to have a left-right symmetry of the lobes, they start and end at the same height and they are very reversed U shaped. My own propeller's lobes look different. They are lower on the right side than the left side, and they are not nearly as reversed U. Robert however states that Skrdlovice propellers have some different type of lobes, depending on age - I'm just not sure I have seen them as reversed U shaped as the Aseda ones.
From what I can see of your pictures, I still would have thought yours to be Skrdlovice. Maybe someone in its history thought it would fetch more money if it was Scandinavian instead of Czech? I think Scandinavian glass had an earlier rise in the collectibles market than Czech glass...