Johannes Grützke FREUND UND FEIND (...UNTERSCHEIDEN) Monogrammed and dated lower left: J.G.81. Signed and dated with brush in brown on the reverse: Johannes Grützke 6.7.1981 1981 Oil on canvas 220 x 205 cm Johannes Grützke. Ölbilder 1970-1991, Pastelle 1982-1991. Hamburg, Galerie Brockstedt, 1991, cat. no. 7, full-page colour ill. not paginated 220 x 205 cm