You're thinking in the right direction but I'm not convinced you will find the answer any time soon. If I look at the spout I would say Gordiola (Mallorca) or Altare (Italy). The rigaree points at Gordiola or Murano - Gordiola used experienced Murano glassblowers. The crackle is very Murano and so is the griffon stopper. All in all, there are several options, and a few more because nothing is always 100% certain.