3956022 Virgin and Child, Fragment of the altar of Olsberg, so-called "Madonna of Olsberg", c.1437-40 (mixed technique on wood) by Witz, Konrad (1400/10-44/6); 64.5 x 51.5 cm; Kunstmuseum, Basel, Switzerland; (add.info.: Part of the central wing of a triptych for the Cistercian monastery Olsberg near Rheinfelden, see also XOS 3956018 Mixed technique on spruce wood laminated with canvas).