It certainly looks like a piece of 'Murano' to me.
If it had it's original makers sticker, it would certainly make it easiar to identify.
Perhaps you could try posting this in the Murano Society section.
Just a little bug-bear of mine; why do people always identify pieces as being 'Murano'? Murano is an Island (Italian) with many different makers, so labelling something as being Murano is a bit like saying it is English or Stourbridge.
I understand that there are problems in identifying specific makers, but with all the interest in such glass, you would think that someone would have the knowledge to differentiate the work of one factory from another (even though they did copy one another).
Perhaps everyone should refer to such glass as 'Murano School' or something similar?