The Pukeberg soliflor vases are highly reminiscent of Troika Pottery. The vase that Anne gave a link to, is more likely to have come from Walther. Numerous coloured vases, with etikett intact clearly showing the Walther W, appear on eBay Germany, and whilst there are many circular variants, there are also square/rectangular vases.
It would be interesting to have some idea of the number of Pukeberg variants.
Regards,
Marcus