Oil a. sand/cardboard, 27 x 37 cm, lo. ri. sign. a. dat. Sprotte 80, on the backing cardboard dedicated by Siegward a. Cosmea Sprotte. - Painter a. drawer with background of philosophical aesthetics. S. was pupil of E. Orlik in Berlin and K. Hagemeister in Werder/Havel. He worked a. lived in Kampen on Sylt, where he became a central figure of artistic life.