I had wondered if your label was connected to Seguso Vetri D'Arte, probably because I think this (th label in the attached photo) is the label I was thinking about. But it's clearly different. My label is on a reproduction wine glass, which I'm reasonably certain was made in the 1980's. I would think that although the labels are not an exact match, this label at least tells which era your label comes from, i.e. the 1980's. I still can't find a company of that name after 1954, though. There are so many Segusos in Murano that it would not surprise me if such a company did exist in the 80's for a while. BTW, Alberto Seguso, who I mentioned in the my previous post, was the brother of Archimede Seguso.