colourful aquatint on paper Dimension: 35 x 34,5 cm signed and dated by stamp lower right: Kupka 1903 signed in the middle (left) by stamp: Kupka   Exhibited.   Published.    Confirmation of authenticity by Vladimír 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.   Also consulted with Professor Jaromir Zemina, Dr Karel Srp, Dr Jiri Machalicky and Aneta Kopecka.