No one else has answered, so I thought I would tell the little I know. I often see vases with these types of handles and different types of decoration sold as Fratelli Toso, but I have never been convinced of the attribution. I haven't seen one with a label, so cannot be sure who did this style of vase.
The gondolas were made by several companies. I usually classify them in the "generic" category unless there is a signature. Generic to me just means that I see them a lot and have no idea who made them. Your is different than most I see in having internal decoration, rather than painted on. I noticed a few weeks ago that gondolas were selling well (for gondolas) on eBay. The market for them used to be very poor.
Hope someone has better information,
Anita