It's 25 cm high, roughly 13 by 9 cm at the base and top (but quite an irregular shape), I think mold-blown. There doesn't seem to be much wear at the base, but the glass itself feels quite hard and the style and colour don't feel very modern to me, so I still think it might be 60s-70s.
As to origin, no idea. German most likely, but it might be Scandinavian or perhaps Dutch.
Any ideas welcome!
Astrid