Introduced in 1911. Height: 8.1cm (3.19ins). Width: 3.4cm (1.3ins). Depth: 1.9cm (0.75ins). Rene Lalique black glass 'Tete D'aigle' cachet.
Engraved makers mark, 'R Lalique France No. 175'.
Book reference: 'R. LALIQUE Catalogue Raisonné De L'Oeuvre De Verre', by Felix Marcilhac. Les Editions De L'Amateur. Figure 175.