its quite a common shape, and as you say still made in Murano today, also this type of vase has/is
been made in Bohemia, Holland, Scandinavia etc.
I think the beveled edge to the base can often mean Bohemian/Czech. That would be my guess,
wherever, its an attractive vase
ps ive also seen practically identical by Flavio Poli for seguso, without a label or signature, its
not going to be easy to get it 100%