Topic: Glass bowl - Scandinavian?

[Magpie2]

Hi everyone
I am a new member and happy to find this amazing glass knowledge resource.  I have built up some knowledge over the years of collecting and learning about glass but often am stumped in researching an item.  I picked up this bowl at the same time as some Lasisepat pieces so I wondered if this was a quality piece too.  It is just over a kilo with  dimensions: Dia 22cm x H 7cm, flattish rim. On the base there is a round line mould mark and slightly recessed base.  I am finding it difficult to describe the pattern- looks like skeins of wool or seaweed! So that hasn’t helped my search.  No marks.
Thanks if you can help at all or point me in a direction to look.
Magpie2