I think you're safer with generic Murano. Fratelli Toso, Seguso Vetri d'Arte, Cenedese and a host of others made similar pieces. I might guess at what it might be for cataloging if it were in my collection, but I wouldn't feel good about giving it a specific attribution for the purpose of selling it. Nice little piece, though. I hate to think what you'll get for it in the current Murano market.