chalk on paper Dimensions: 12,5 x 20 cm  signed lower right "Kupka" verso pencil drawing: open-air sketches  Provenance:- purchased by Jindrich Waldes directly from Frantisek Kupka - confiscated by the Gestapo in 1939, moved to the State Gallery and then to the National Gallery in Prague - deposited in the collections of the National Gallery in Prague, registered under No. W 2173 / NG K 5021 - in 1996 the restitution of the National Gallery in Prague (the so-called Waldes restitution) to the heirs of the factory owner Jindrich Waldes - significant private collection   Exhibited.    Publicated.   Consulted with Professor Jaromir Zemina, Dr Karel Srp, Dr Jiri Machalicky, Aneta Kopecka and Vladimir Lekes.   Confirmation of authenticity by Vladimir Lekes attached.