I think that both Roy's weight and the one Lily linked to on eBay are Murano.
Lily's point about "the transparent red stuff" would be a good point except that in the eBay example, although the main photo is not too sharp, the red coating around the millefiori cane is not the same as in Roy's weight where it is used as a main feature for both a cane and as "threading".
I don't know about the maker of either weight - or, for that matter, the age. But I suspect Roy's could be a later 20th century one as transparent colours do not seem to feature too much in the literature that I have seen where Murano items from, say, the 1930s through 1970s are shown.