M:
Foolish is when you don't ask a question. I'd say the the features that made me first say Murano are the same features present in Ardy's bowl. Yours could be AVeM, Galliano Ferro, even Seguso, as they all made very similar pieces, as that's what sold at the time. I would be very reluctant to attribute a bowl like this without a label on it. First, it's difficult for me to do. Second, putting a name on the bowl changes some people's perceptions of its worth. A Seguso is worth more than a GF, which is worth more than a generic Murano label. So I tend to stay with the generic Murano.
I like these bowls, btw, and it's still possible it's something else.
David