Over last 30 years I have dealt in a variety of categories of glass, but have never come across anything like this before, either "in the flesh" or in reference books.
As can be seen, it has a grand mix of style pointers - it has the classic key pattern, but also something which loos like a Polynesian legend. The shape is reminiscent of a Gu vase, particularly if the wide end is upwards, but the orientation of the decoration seems to suggest strongly that this should be at the bottom.
The technology is obviously akin in some ways to North-East English pressed glass, but it lacks the crispness.
Any ideas or positive identifications, please?