a moulded opalescent "Escargot" glass vase, France 1920-30's, model no 931.
Marked R. LALIQUE (moulded) and scratched Lalique. Height 21,5 cm.
The mouth with some wear to edges,
Félix Marcilhac, "R. Lalique, Catalogue raisonné de l'oevre de verre", Les éditions de l'amateur, Paris 1994, see the model illustrated p 424, nr 931.
The model was designed in 1920, not produced after 1947.