ardy, I saw the vase, but couldn't add anything useful. Marina Barovier has a couple of things by Da Ros in her book on glass animals. The pieces have a bit of the same spirit, but are totally different. The vase does have the Da Ros look about it. Da Ros designed many of the Cenedese pieces, so it was probably designed by him. I don't know if it was any of the major shows, however. I wondered when I saw it how difficult it might have been to execute it.