Frosted tumbler - Scandinavian?

Could anyone identify this distinctive pattern, please? Textured / frosted exterior with clear angular ribbing, slightly flared at the bottom and moulded base with pattern in relief. No real wear but then the glasses (12 in total, all identical) were wrapped in 1987 newspaper and clearly have been in the box a long time! Looks Scandinavian, or at least influenced, maybe Ravenhead?