A diptych presenting two contrasting piece. One drawing presents a black on white geometric pattern occupying the entire surface. Juxtaposition of black vertical, horizontal and oblique lines creates equal and aligned forms. The background presents some charcoal smudging. The verso present a composition of a black on white geometric pattern is present on the back of the paper. The second piece presents a paper surface entirely covered with metallic pigments. Overall copper/gold tones occupy the composition.