The shape of the rim screams Scandi, but the weight, bullicante, body shape as well as the fact it's unsigned (!) while being a very high quality piece, all to me suggest Murano. Fratelli Toso? My other theory, for which I have no support other than the use of the color green, is that it's a piece by Carl Erickson Glassworks of Ohio. Please "bump" to Scandi board if someone knows for certain that's where it belongs. (Scroll down to next posting for more pix).
Thanks for any help,