OK people, this is the one. An extra-extra-large tri-color sommerso vase by Seguso, the master art glass works from Murano, Italy. This piece is 9 inches tall, 9 inches wide, 5 inches deep, and weighs an astonishing 17 lbs. One small scratch on the side. Circa 1960s-1970s. Attributed to Flavio Poli. Unsigned.