419   Peter Phillips

Untitled, 1973

420   Constantin Polastri

Hombrechtikon construction site, 1981

421   Stephen Prina

Étudiants de Salamanque (The Students of Salamanca), 1859-60, from the series "Exquisite Corpse: The Complete Paintings of Manet", 1988

422   Marc Quinn

Untitled, 2009

423   Giacomo Santiago Rogado

Malertugend II, 2007

424   Charles Rollier

Untitled, 1965

425   Dieter Roth

Kartoffel mit Auge, 1983

426   Dieter Roth

Untitled, 1982

427   Christoph Rütimann

2 works: Untitled, 2020; Untitled, 2020

428   Christoph Rütimann

Mit neapelgelben Flecken, 2011

429   Alexander Sadkowsky

Untitled, 1967

430   Mario Sala

3 works: Untitled

431   Giuseppe Santomaso

Lettera a Palladio, 1980

432   Antonio Scaccabarozzi

2 works: Velatura su violetto, 2005

433   Hans Schärer

Blaukreuz, 1988

434   Hans Schärer

Untitled, 1971

435   Adrian Schiess

Untitled, 1993

436   Klaudia Schifferle

5 works: Untitled, 1993

437   Klaudia Schifferle

Untitled, 1992/1996

438   Klaudia Schifferle

Untitled, 1984

439   Klaudia Schifferle

Berg Blumen, 1983

440   Klaudia Schifferle

Untitled, 1984

441   Klaudia Schifferle

Untitled, 1996

442   Henri Schmid

Recto: Still Life with Flowers; verso: Landscape near Cassis

443   Henri Schmid

Circus, 1971