Dated between 1910 and 1930 when Müller Frères had it produced in the Croismare glassworks, as stamped on it (G. V. de Croismare for Grande Verrerie).
Features the original socket and a decorative wrought and hammered iron ring. Perfect for do-it-yourselfers and lighting designers. Dimensions: total height 16 cm, diameter 8 cm.