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7 6 1 D etail: Zdenek Sykora (1920–2011). Linie Nr. 93. 1992. Oil on pencil on canvas. 94 × 94 cm. Estimate: CHF 80 000/140 000 2 K ennethMartin (1905–1984). Chance. Order. Change II. 1979. Oil on canvas. 91.4 × 91.4 cm. Estimate: CHF 30 000/50 000 3 V ictor Vasarely (1906–1997). Karpat. 1984. Acrylic on canvas. 88 × 84 cm. Estimate: CHF 70 000/90 000 4 M ark Tobey (1890–1976). Aspects. 1965. Tempera with monotype on paper. 51 × 101.7 cm. Estimate: CHF 120 000/180 000 5 J ean-Paul Riopelle (1923–2002). Noyauttage. 1957. Oil on canvas. 50 × 64 cm. Estimate: CHF 120 000/180 000 6 Z denek Sykora (1920–2011). Linien Nr. 12. 1981. Oil and pencil on canvas. 170 × 170 cm. Estimate: CHF 150 000/250 000