Is this a lamp by Verner Panton?  

I never learn...
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and again...

ah finally!
The multi colored bands are metal and light diffuser is plastic.

Hello Alex.
I've seen and...
Hello Alex.
I've seen and know all of Panton's light designs and I've seen most of Panton's known prototypes.
I honestly can't see anything in this lamp that reminds me of Panton, so I wouldn't believe this seller for one moment unless I was presented with undeniable evidence.

I'm not experienced in the fi...
I'm not experienced in the field, but I don't think it's from Panton.

Thanks M_Andersen.
Wow, DA really is a fantastic source of knowledge. When I saw the lamp, I knew I could put my question here and expect someone who'd be willing to try and help me straighten things out...
I like the lamp anyway, but I do want to avoid paying crazy collector's prices for someting which is not authentic...
Thanks again!

colors are very much like panton
That lamp looks similiar to a 331 ceiling light made by Alvar Alto in 1954 but I only think he made that lamp in white,
I also have a lamp that looks similiar to yours by Robert Sonoman but it is also White The fact that it says made in Austria should be easier to narrow it down

cont
Since it is made in Austria should be eaiser to narrow it down.

For many decades...
the company I used to serve as vice-president design was involved in selling Verner Panton's lamps in Canada and although the colorful approach is Panton-like, I have never seen this one as part of his collections.

Thanks LRF. I'm not so sure...
Thanks LRF. I'm not so sure about the 330, but it definitely has some similarities to Aalto's A910 wall sconce which I also found when googling your suggestions.
Still, just like you said, I doubt that Aalto's lamp ever came in such a colorful version.