Dalla Valentino is a factory that produces some nice original work, but also specialies in high quality reproductions of famous designs, including the Barovier patchworks.
They probably have a website. Wendy, did you do a web search?
Corning sells a great video called "the problem of fakes and reproductions in Murano Glass," or something like that, which shows a lot of the Valentino designs side by side with the originals.
Laura