SIEBER, FRIEDRICH (1925-2002), Portfolio "Formtendenzen der Farbe", 1971,

SIEBER, FRIEDRICH (1925-2002), folder "Form tendencies of color", 1971, Gallery Senatore 1971, contains 7 color serigraphs, each numbered with pencil. 31/100, signed and dated, HxW: sheets approx. 40x30.5 cm. Slight traces of age and creases, folder stained at the edges.