These are the only known examples of this model executed in these rare colors. The coupes were acquired from the son of a former glassman at the Lalique factory. Since the model is known only in its clear glass version, it is most likely that these were experimental and are probably unique.

cf. Felix Marcilhac, R. Lalique, Catalogue raisonné de l'oeuvre de verre, Les éditions de l'Amateur, Paris, ref. no. 10-386;
Nicholas M. Dawes, Lalique Glass, Crown Publishers Inc., NY, 1986, p. 103; Lalique Encore, exhibition catalogue, Dyansen 57 Gallery, New York, March 1-31 1984, text by Nicholas Dawes, no. 14;
For a clear example, see C. Vane Percy, The Glass of Lalique: a Collector's Guide, 1977, Blacker, Calmann Cooper Ltd., London, p.59