thanks for the suggestion of Calgon Sue.
Never heard of it. Is it a product aimed specifically at cleaning glass? Remember, you're talking to someone who has already laid out a small mortgage on Hagesan Blue and Kilrok K (without results) - so I'm rather wary of buying more chemicals with similar results. Is it expensive?
Now that the weekend is here, I will try the suggestion of Brasso on a nylon type abrasive pad and see what results I get. I will let you know how I get on. Because of the shape, I can at least get insude the vase very easily. cheers Paul.