Hi Tiger
The auction one probably is Seguso Vetri d'Arte by Flavio Poli - you can see one in J Miller 2006 pp318 - I also have pictures in older books, those are so Poli colours - Blue/Purple with fuchsia halo, he used this colour combo for lots of items in the 1950s (1955 seems good as well).
C Bestetti 'Murano' 1960 pp141 - Seguso Vase by F Poli 1956 - photo Copyright Feruzzi, Pag
So it was a popular shape (basket) like the faceted vases and tall decanters - many companies made them, including some that are probably off the map by now.
Your basket doesn't have a clearly defined halo, it's like yellow melding into a green - you can see the definition best on the handle - it's still sommerso but more the type you see on animals and am-orphic shapes.
Your basket is actually very beautiful, if you have cleaned it really well and it’s still cloudy, that's water damage - Ivo's advice is best in that case.
Adam P