Hi Kane
Thanks for that! I will do a quick post there and a link to here so Andy doesn't miss it.
I'm going to stick my neck out here even though I probably don't know enough to have experience to do so....I am absolutely convinced my vase is Murano glass and is high quality. It is impeccably made and finished, the sommerso is beautifully done and the applied trails down the sides are also executed immaculately well, not only in how they are finished submerged into the foot glass completely, but also how they are wound around the body of the vase. The base edges are bevelled and the rim of the base shows years of wear, not just the random scratches on the base. There is nothing sloppy on this vase.
Whilst this is not an indicator, I have had and still do have, some Czechoslovakian glass and it doesn't sit right with those pieces (Large Skrdlovice Beranek vase and a Chribska 'Bat' vase and a more recent Czech large vase are what I still have). It is much thicker in glass than the Beranek vase, all the way down 3cm thick, the rim is not the same as the Beranek piece, which is very thick but much thinner than this vase, and actually the walls of that Beranek vase become thinner under the rim if you run your finger round the interior. However put it together with my large red and gold Murano bowl and amber and clear winged Murano vase and they work perfectly well together. As I said, not a way to make an id, but sometimes those little points help.
So there is no question in my mind (and it seems not in Andy's either reading the linked thread), but it's just finding the maker that is elusive

thanks again
m