gouache and ink on paper 28 x 22 cm signed lower right by hand of the author: "Kupka" signed lower left by stamp: "Kupka" in the middle confirmation of the authenticity written by Andreé Martinel-Kupka (stepdaughter of the painter): "Certifice authentique Paris le 1er Novembre 1974 Madame Martinel"   Provenance: - Galerie Zlotowski, Paris - private collection Paris    Confirmation of the authenticity by Vladimir Lekes, author of the Catalogue Raisonné of Oil Paintings by Frantisek Kupka (published in collaboration with Adolf Loos Apartment and Gallery, National Gallery in Prague, Austrian National Gallery Belvedere and the copyright holder of the painter by the French state company Adagp Paris) registered in the Guide International des experts et spécialistes, published in France, attached.   Confirmation of the authenticity by Pierre Brullé.   Also consulted with Professor Jaromir Zemina and Dr. Jiri Machalicky.