Paolo Venini , ‘Opaline’ vase, ca. 1952, Four-sided. H. 10 cm. Execution: Venini & C. Cased glass, clear and opalescent green. Marked on the bottom: venini murano ITALIA (acid stamp).,
Cf. exh. cat. Paolo Venini, Le Stanze del Vetro, Venice 2016, p. 141 ff.