François-Emile DECORCHEMONT Butterfly chalice mod.20 - model created in 1912, distributed until 1914 Blue, green, pink and yellow glass paste Marked with the stamp Made in 6 pieces 13 x 12.5 cm Bibliography : Véronique Ayroles, François Décorchemont, Maître de la pâte de verre, Editions Norma, Paris, 2006, similar model referenced under no. 20 p. 234. A "Calice Papillons" in pâte de verre by François Décorchemont, stamped 5.12 x 4.92 in. François-Emile DECORCHEMONT