seen it before, but what is it?

i'm sure i've seen this before, thinking it's Frank Thrower for Dartington?

There is currently a debate going on on another board about the source of these. They have been identified as Lasisepat glass from Finland. However Charles Hajdamach states in his most recent 20th century British Glass page 222 that they are part of the Flair Range made by the centrifuge process by Ravenhead. So I have 4 small ones and two large of these and they are all the same. The issue is whether they are Finnish and distributed by Ravenhead here, or made by Ravenhead, or made by Lasisepat and indeed whether or not there are two versions, one British one Finnish. As of yet I don't know the answer. But they are not Dartington definitely.
m