A very lovely piece by a sought after designer. It was designed in 1961. It could have been produced at any time after this, but possibly in limited quantities that year.
In terms of value, it's very hard to say. It's not one of the usual Lundin pieces one sees, which may take the price up and or down. Obviously, it also depends on where you sell it, eBay giving you the lowest price possible. I can't imagine this selling for under $750. However, you need an expert to give you good advice on this. Daniel, a GMB member with a vast knowledge of Orrefors, could probably tell you and Bill Geary, who is a member her, is a fully qualified and very knowledgeable appraiser of Scandinavian glass.
It's a piece I'd love to own, btw.
David
PS The price would also depend upon the country in which you sell it.