Ribbed optic vase

Hi
I'm new to glass collecting. Bought this blue ribbed optic vase from a junk shop and am struggling to identify where it's from. Have scoured the web looking for examples but not found much to help.

It's about 12 inches tall, about 6 inches at widest diameter and weighs just under 2.5kg. It has no marks or signatures.

I'd really appreciate any help in attributing maker/designer. Links to images below.

Thanks

http://www.flickr.com/photos/jeffstuka/5950145655/in/photostream
http://www.flickr.com/photos/jeffstuka/5950705774/in/photostream/
http://www.flickr.com/photos/jeffstuka/5950147547/in/photostream/

Looks like a quality piece but I don't recognise the shape from any of the obvious makers of optic vases. Judging by the condition of the base I would guess at this being a more recent piece.

Cheers. There is a bit more wear on the base than can be seen on the image. That picture seems to flatter it somewhat.

I have a couple of other vases I've picked up that I've been able to identify, a hermanova hut from 50/60's and a Sea Glasbruk from 70's and the wear is about comparable to the Hermanova and less than the Glasbruk.

There's a similar vase in one of my books, but it has far more pronounced curves. It was designed by Vladislav Urban at Hermanova, but it also says that Frantisek Vizner, also at Hemanova, designed 'a very similar and more common shape, with fewer rounded undulations' (Millers Collectables Price Guide 2008; p222), which sounds more like yours.
A nice vase btw.

Have had a look at some Urban and Vizner pieces and the colour looks close to some of Urban's works. Cheers for the info. I shall look into it more.