Thanks, m.
Yes, those blue-with-Silver-Chloride 1970s WMF pieces are quite abundant on German ebay, not exclusively in Zalloni shapes.
Seems the only colourway they are found in, so I would
think rather not related to the pieces in question.
BTW, I had forgotten about the ashtray thread as well (and that I had contributed to it).
Dirk mentions
>> there the vases as well.
It would be much better (regarding value) if my vase and the other items from this range were Gralglas and Wiedmann.

If they turned out to be Polish, I guess they wouldn't sell in that price range anymore, though they are still lovely pieces.
So let us hope we will find a labelled one some day which will tell one way or the other...
Michael