I get a Murano or Czech feeling for the basket. Fratelli Toso did some similar dotted bowls, but I have never seen this shape in one of their baskets. The pontil area looks very much like theirs. This type of pontil wasn't exclusive to them, though. The Fratelli Toso dot bowls I have seen have all had green dots, along with the other colors.
The basket looks like a quality piece of art glass. If it is Chinese (which I doubt) it would be among their better pieces. I favor 1960s south-central Europe.
Anita