Bidspirit auction | Karl Oppermann (1930–2022), “Sec

Karl Oppermann (1930–2022), “Sec - Karl Oppermann (1930–2022), “Secco,” watercolor and paper collage on cardboard, signed and dated 13.8.84 in the lower right, 15 x 11.5 cm, mounted behind glass and a mat in a clip-on frame, 40 x 30 cm