a set of two prints (lithograph in colours/ offset lithograph in colours), 1986/ 1968, on BFK Rives/ Arches, each signed in pencil, numbered k/z (the total edition was 176)/ numbered 20/144, published by Philosophie des Arts/ HKL Ltd., Paris/ Boston, printed by Desjobert/ Atelier Mourlot, Ltd., Paris, the full sheets, "Untitled, from Michel Waldberg: 'Poèmes dans le ciel'" with a tape remain and two tape stains at the upper sheet edge on the reverse, "Untitled; from 'National Collection of Fine Arts Portfolio'" with slight light staining, colours attenuated, with minor soling in two places and two tape remains on the reverse, otherwise both in good condition, framed