Anne's question is very relevant. There are many known cases of Murano weights with an etched "Baccarat" stamp :!: Many can be found in eBay.
It is known that a false Baccarat etched stamp has been used for some time on a variety of glassware, and that often the decanter & glasses are easily seen as being of the wrong shapes (having first seen real Baccarat marks, of course).
Sometimes, the fake stamps are not very clear and can even appear as "double-etched" (with what looks like a shadow second mark).
As well as having an incorrect Baccarat stamp, the canes in this item are certainly Murano and nothing like genuine Baccarat canes. One point to add to the confusion is that we cannot be sure that items like this were actualy made in Murano, as Murano canes have been used by other glassworks around the world (I understand that they are still used these days by some American paperweight makers). On the other hand, these pieces could be genuine Murano-made items but with a false stamp added later. Truth is, I don't know what's true, other than the existance of the false Baccarat stamps.
[By the way, Anne, your link to the Great Glass info is, of course, not to one of Angela's sites.]