Barovier & Toso Efeso vase by Ercole Barovier &  c.1964. Made in Murano Italy.

Internally decorated glass with random air bubbles H. 32 cm.

Ref. Wrights auction 24 Jan 2019, 13 June 2015. $11,250us

Fifties Glass by Leslie Pina p27.

Barovier glass in Murano 1866-1972 pg170 Fig196 Illustrates this technique.