That's a big help, thank-you.

It does look right for something good and Venetian.
It's not my area, but I'm sure other folk here with more knowledge will be able to help you. I think there may well be a lot of interest, this is a very unusual sort of set to find.

We won't be able to give you a valuation, we don't really discuss values here, just glass identification, but once you have an identification, you can search auction sites for past sales of similar items to get a ball park figure.
Can we see an image of the bases of the items? We can tell a lot from looking at bottoms.

We do like having the images of the glass posted directly, thank-you. It means the thread is properly illustrated, along with the discussion for posterity.