Constant
2005 collection Trudy Nieuwenhuys-van der Horst, estate Constant
2008 Trudy Nieuwenhuys-van der Horst, longterm loan to Stedelijk Museum Schiedam, NL
2016 Fondation Constant, longterm loan to Amsterdam Museum, Amsterdam, NL
Constant NEW BABYLON (939)
New Babylon. Constant (2113)