Drop murano glass vase the sixties saw the production of drop murano glass vase. each unique vase comes in a beautiful box with all necessary certificates of authenticity and warranty information. every piece by alessandro mandruzzato is certified with a trademark and label, “vetro artistico di murano no. 038,” signifying that it is original italian murano glass, and includes warranty document support. Signed by maker,labeled by maker,labeled with country of origin