WattsOSEEnsemble2011 · (a, b) plastic (polyamide); (c, d) leather, plastic (acrylic)The Metropolitan Museum of Art
WattsOSPHPerspex Hands Chatelaine2007 · Perspex, silver, zinc, and leather10 1/4 × 6 × 1 3/8 in., 0.2 lb. (26 × 15.2 × 3.5 cm, 0.1 kg)The Metropolitan Museum of Art
Lilla speespak1966 · sewing on cotton (textile), metalwidth: 53 cm, height: 72 cm, width: 40 cm, height: 92 cmRijksmuseum
Invitation to the exhibition of Luuks Speespakken (Space Suits)1966 · printing on paperwidth: 430 cm, height: 205 cmRijksmuseum