I'll stay with Murano. In "Pizzicato" the bubbles are more vertical, that is, they go up the vase in a stream. In Patti3435's vase, the bubbles are more horizontal, they go round the vase. The colours on the first vase don't seem right for Mstisov.
Also, Adam I would guess your piece is one of the pieces made at Karlovarske Sklo after production of Mstisov moved there.
I'm open to correction on thsi one, though.