Screen print on PVC paper - These three screen prints are from the collective portfolio « 9 x 5 konkret. 9 Künstler. 5 Farben » (Adrian, Alviani, Bill, Calderara, Loewensberg, Mavignier, Novosad, Wilding, Morellet). Chartres is about the stained glass windows of the Chartres Cathedral in France, which Morellet was very fond of.