Frantisek Kupka (1871 – 1957) - Study for Amorph – Two-colour Fugue 1910–1912 graphite pencil on paper 22.6 x 21.6 cm verso old exhibition and gallery labels Exhibited: – Frantisek Kupka: Paintings and Works on Paper, January 9 – April 10, 1999, Galerie Louis Stern Fine Arts, West Hollywood, California, USA – B.C. Holland, 222 West Superior Street, Chicago, Illinois, USA – Nancy Schwartz Fine Art, New York, USA – Galerie Zlotowski, 20 rue de Seine, Paris, France Confirmation of authenticity enclosed by Vladimir Lekes, main 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 by Adagp Paris), registered in the Guide International des experts et spécialistes, published in France. Authenticity certificate enclosed from the author of the exhibition, Pierre Brullé, dated November 29, 2021, Paris. Further consulted with Dr Irena Zantovska Murray HonFRIBA, Professor Jaromir Zemina, Dr Jiri Machalicky. Rarely found on the art market: a study for the famous oil Amorfa – Two-coloured Fugue (oil on canvas, 1912, in the collection of the National Gallery in Prague). Auction, Prague, Czech Republic.