This is a watercolour by Frantisek Kupka. It is signed in ink by the artist with his monogram “K” at the lower right.
It is also stamp signed “Kupka”, verso

Provenance:
Collection of Royal S Marks (1927-1987), New York
The authenticity has been kindly verbally confirmed by Pierre Brullé.

Exhibited:
Verschmelzendes Rosa und schwarze Spannung. Werke des osteuropäischen Konstruktivismus aus einer deutschen Privatsammlung. Winterthur, Kunstmuseum, 2001, ill. p. 57.
L’abstraction en Europe. Saint-Paul-de-Vence, Fondation Maeght, 2011, cat. no. 12.
Constructivism in Europe. From Malevich to Kandinsky. Peking, National Art Museum of China, 2012, cat. no. 16, ill. p. 28.
Die Revolution entläßt ihre Bilder. Münster, Kunstmuseum Pablo Picasso, 2014, cat. no. 12.

Condition: Very good condition.