Thanks John and Mike for your considered comments. John's link shows a basket which, from the one photo, seems to be a dead-ringer for my basket (except maybe for colour). However, as Mike points out, the description just says "Murano" and may be just a copy of the original seller's hopeful description. As mentioned, many similar ones on eBay just say "Murano, Salviati or Salviati Style". Will let you know if I get anywhere with my enquiries. Will keep trying.
Kind regards,
Terry