Per Lütken_rare GRØNLAND ball vase

As I mentioned yesterday, we've got three ball vases which do not belong to the RONDO series, but each one of them to a different one: GRØNLAND, DISKO and LABRADOR.

Here you have the GRØNLAND one.

It doesn't appear at the GRØNLAND catalogue pages at all, just like the jugs and glasses (http://www.collectorsweekly.com/stories/40912-grnland-per-ltken-holmegaard-1960?in=collection-463) or the BALTICA creamer and sugarbowl set (http://www.collectorsweekly.com/stories/41649-baltica-creamer-and-sugar-bowl-per-lt?in=collection-463 which in fact are not Gronland, although they use its colour), which adds quite a lot of confusion to us collectors, but I guess every factory have this little out of series items that can be catalogued within a couple of ranges, or at no range at all! :)