Very neat find, Dirk - same type of clear cased vase, rectangular section, rounded corners and almost a match - except for the polished rim. However, I do not think these are Royal Krona (Maleras, Björkshult, Skruf & Gullaskruf). I think these are more likely from Bormioli Rocco in Parma, and much more recent than Royal Krona which fell apart in 1977. But never say never, of course.