Arriba en Mobil: Las ideas de un accionista 1981 Hans Haacke Arriba en Mobil: Las ideas de un accionista Photoetching, collage of Mobil stock certificate and drawing Ten parts, each framed: 39 1/8 × 24 13/16 in. (99.4 × 63 cm) Gift of Marshall Field’s and The Albert A. Robin Estate by exchange