signed and numbered "OP-KIER R. Klein-Moquay" on a plaque affixed to the underside

IKB® dry pigment in Plexiglas, glass, wood and steel

14 1/2 x 49 1/4 x 39 1/4 in. (36.8 x 125.1 x 99.7 cm.)

Designed in 1961, this work is from an edition begun in 1963 under the supervision of Rotraut Klein-Moquay based on a model by Yves Klein.