There's another, Italian book on this artist that's out that's twice the price. I'm wondering if it's appreciably better in terms of scope of coverage.
As to the piece, thanks for the confirmation. The "alabastro" glass is right on in terms of color, texture and heft, from what I can tell. Also, it is a modern, "stylized" piece which is consistent with a Seguso fish pictured in Pina's book on Italian Glass. Seguso as I understand was a sculptor, but I have only ever seen this "hugging couple" design on more recent pieces - specifically a tall 1980s Anatro scupture, which is more anatomically detailed than the Seguso. (I'll try to upload a picture later tonight). I'm wondering if Seguso was the progenitor of this form in glass. I'm also wondering if it's been seen in pieces by other Muranese designers in the 1950s and 1960s.