"René Lalique, “dahlia And Butterfly” Ashtray In Siena Patinated White Glass René Lalique"
René Lalique, “Dahlia and Butterfly” ashtray in sienna patinated white glass René Lalique, model created in 1931. Acid signature. In a perfect state. Félix Marcilhac, René Lalique - Catalog Raisonné of Glass Works, Les Éditions de l'Amateur, Paris, 2011, No. 318.