I bought this as a punt, as the colour scheme is very similar to that used by Orrefors / Kosta.
Having finally got my hands on it I now don't think it's Swedish, as it's hollow all the way down to the base of the foot and unlike anything Swedish I've seen before.
The body itself is blue and yellow, with a bubble in the middle of each. Height 9 inches.
The glass is thin, and there's a pontil and a little foot wear, but no signature.
I'm not disappointed as I believe that this is a very well made piece of glass and goes with my Swedish bits, but I would love to know who it's actually by.
(if it helps, it was bought at auction in the USA, and there isn't any irridescence).
Gareth