An update on this dove (for anyone interested

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I live in Belgium so I contacted the Art and Design Museum in Ghent. They couldn't tell anything about the dove and referred me to Mr Marc Heiremans, who is supposed to be thé expert in Belgium when it comes to glass and he published 3 works about Vetri glass. I sent him pictures of the dove and received his reply today:
"I'm sorry but I can't help you either.
The dove certainly is NOT Seguso Vetro D'Arte, Archimede Seguso or Seguso Viro (3 related glass companies)
regards
Mark Heiremans"
So according to him, all auction housed that had put the name Seguso on it in the past where wrong.
Back to start I guess

All help or information is still appreciated though