I would never attribute those filigranas to Venini, but that's just me. Salviati and Fratelli Toso are both strong possibilities.
I agree with that. They look like older Salviati or Toso pieces to me than anything Venini.
The ruby colored pitcher looks like an iridized piece to me. I don't see anything "scavo" about it. However, it's hard to see in the photo exactly what's going on with the finish. It's a lovely piece, but I'm not sure it's Italian. I'd be interested in seeing more photos.
It looks like the glass around the middle is bubbling up? Maybe you can post this vase in the Main Glass board when you get some new photos. I think its very interesting. It might be a Spanish piece too. The way the neck and mouth of the vase are made does make me think its an older piece.
Javier is right that there are tons of new scavos out there. I'm not sure most of them are Italian. Cenedese still makes them, but they are signed. As Ivo pointed out, there are lots of replicas of Roman glass that have a Scavo finish.
I have seen a ton of the little scavo vases with twisted handles around the necks on Ebay lately, well thats not true, since I've been on Ebay! Some are described as Roman glass, and others as Murano. One of the reasons im not touching those anymore. I did buy 1 very large blue vase, that I thought was an older Scavo piece, but the more time passes, I think I bought a new vase. I still need to post a pic of it. I bought it because of the color, it was blue, and has applied white handles that looked old (from the small pictures).
... If the piece offered by the German seller didn't have that curious Seguso sticker, I would have thought it an early Cenedese vase. That such a good reproduction exists worries me more than the cheap Scavos offered all over ebay.
I know, my first thought too. I have a few book which do show older Cenedese Scavo pieces and it looks like something early, but seeing how it had a Seguso label, a new one at that, and how it looked like an older piece, made me wonder if they werent just appliying the labels repros. I'd really like to see if the Seguso Vetri book is coming out soon, to see if any of these styles are really being made by Seguso or what.
Javier