KOLLER VIEW 2/23

7 Ugo Rondinone Rondinone’s Mandala series dates back to the 1990 s. Without nar- rative or figurative elements, they concentrate enti rely on form and colour, inviting the viewer to contemplation and transcen- dence. SIEBTERJANUARNEUNZEHNHUNDERTACHTUNDNEUN ZIG. 1998. Acrylic and airbrush on canvas and screenprint, on plexiglass. D 220 cm. Estimate: CHF 100 000/200 000 Mark Tobey In 1970, Tobey moved to Basel, where he increasingly worked with larger formats. In contrast to his abstract-expressive line paintings, the viewer is tempted in the present work to discover pictorial details associated with the title ‘Aquarium’. Aquarium. 1964. Tempera on paper, laid down on cardboard. 100 × 69.5 cm. Estimate: CHF 130 000/180 000 Victor Vasarely As a pioneer of the Op Art movement, Vasarely created key works in the 1950s. His paintings were often described as ‘lively’ or ‘pulsating’ because their composition and colouring simulated movement. FERDE-2. 1977. Oil on canvas. 90 × 90 cm. Estimate: CHF 70 000/100 000 © 2023, ProLitteris, Zurich © 2023, ProLitteris, Zurich