Federle, Helmut (b. 1944). "Diatonic structure"
Etching printed in blue, 13.3 x 29.8 cm (plates-edges, the sheet measuring 67.5 x 50.5 cm), signed, titled, dated 99 and numb. 14/ 50 in pencil in lower blank marging. Framed behind U.V. protective glass. Very rare. (2) Hartung, Hans, (1904-1989). (Abstract composition). Lithograph printed in blue and black, 40 x 60 cm (sheet size) signed and numb. 4/ 200 in pencil in lower margin, framed behind Artglass. Copy trimmed just outside the blue rectangle, affecting the black lines in lower margin.
(total 2)