Watercolour/japan, 31 x 48,5 cm, lo. le. sign. a. dat. S. Sprotte 92, glued to the mount at the corners, unframed. - Painter a. drawer with background of philosophical aesthetics, pupil of E. Orlik in Berlin and K. Hagemeister in Werder/Havel, worked and lived in Kampen on Sylt, where he became a central figure of artistic life. - Mus.: San Francisco (Museum of Modern Art), Shanghai, Moscow, Stuttgart, Husum a. others. - Lit.: Vollmer a. others.