Acrylic on canvas. Signed and dated in the lower left corner. Once more signed and dated on the reverse of the canvas, as well as signed, dated, and titled “Chromatische Konstellation - Licht im Fenster” on the stretcher. 40 x 47 cm.
[AR].
- A wonderful example of Mack's diverse exploration of rhythm and color. - The artist returned to painting in the early 1990s. - Offered on the international auction market for the first time (source: artprice.com).

Galerie Neher, Essen (verso with the label). Private collection North Rhine-Westphalia

In good to very good condition. A few small cracks in the paint on the edges of the picture. A few small brown spots in the lower right corner of the picture. The condition report was compiled in daylight with a UV light source and to the best of our knowledge and belief.