In beautiful condition, just gorgeous. It may be by Cortella Ballarin as there was the sticky remnants of a clear tag on the base but it had to be removed because it was just a sticky spot. The blue spiral work also looks like Cortella Ballarin as well but I am no expert so just guessing. Please feel free to tell me if you know more. The goblet is quite large at 5.5 inches across. The yellow ball is very cool. I would say it is mint there are no chips or cracks but there are a few very tiny, virtually invisible spots near the rim that might actually just be residue of some sort but they do not easily clean off and I have cleaned this very gently( please see all pics)

Italian Venetian Murano glass goblet chalice 10.5 inches Several Techniques