Ok, seems to be a tough one

My search didn't come up with much, apart from the fact that "Incalmo" should be the right technical term for this piece.
Certainly a technique used widely in Murano, but I would think not exclusively...
Sort of a role model seems to be this gorgeous Incalmo vase (more often seen as a lamp) by Angelo Mangiarotti
>> LinkSo could it be from Murano as well, or should I look rather towards Poland, China,...?
The seller claimed that it came from an aunt who had passed away 20 years ago; if that is true it could have been made anywhere between the 1960s and 1990s.
Thanks
Michael