Hi R&C and welcome to the board :fc:
Vases like this have been made in various places and this particular one could have originated in any of them. But some are more probable than others.
The most likely is Empoli, near Florence. They have made hundreds of different models of "opalino" (= colour cased milk glass) vases. The treatment of the foot, and the applied handles makes the probability even greater.
With lesser probability your vase could also be Belgian, Swedish, Chinese or Fenton.