Karl Gerstner (Swiss, 1930-2017). Silkscreen in colors on wove paper from the “Color Sounds” series, ca. 1973, depicting a brightly colored geometric composition. Pencil signed and numbered 143/175 in the composition along the lower right. Provenance: Distinguished corporate collection, Minnesota. Sight; Height: 28 3/4 in x width: 28 3/4 in. Framed; Height: 29 1/2 in x width: 29 1/2 in.