Christie's staff member looks at Claude Monet's ''Matinée sur la Seine, te...

Christie's staff member looks at Claude Monet's ''Matinée sur la Seine, te...

Christie's staff member stands by Damien Hirst's ''Veil of Serendipity'' es...

Christie's staff member stands by Damien Hirst's ''Veil of Serendipity'' es...

Christie's staff member looks at Damien Hirst's ''Veil of Serendipity'' est...

Christie's staff member holds Tracey Emin's artwork 'I Wanted You to Fuck t...

Christie's staff members look at Alberto Giacometti's ''Figure I, petite'' ...

Christie's staff members look at Alberto Giacometti's ''Figure I, petite'' ...

Christie's staff members look at Alberto Giacometti's ''Figure I, petite'' ...

Christie's staff member looks at David Hockney's ''Rudston to Sledmere, Aug...

Christie's staff member looks at Claude Monet's ''Prairie fleurie à Givern...

Christie's staff member looks at Alexej von Jawlensky's ''Frau mit Fächer ...

Christie's staff member looks at Alexej von Jawlensky's ''Frau mit Fächer ...

Christie's staff member looks at Alexej von Jawlensky's ''Frau mit Fächer ...

Christie's staff member holds Pablo Picasso's ''La Minotauromachie,'' estim...

Christie's staff member looks at Andy Warhol's ''Self-Portrait (Fright Wig)...

Christie's staff member holds Vincent Van Gogh's ''Naaiende vrouw'' ('Woman...

Christie's staff member looks at Andy Warhol's ''One Multicoloured Marilyn ...

Christie's staff member looks at Lucian Freud's 'Kai' from 1991-92, estimat...

Christie's staff members hold Francis Bacon's 'Landscape near Malabata, Tan...

Christie's staff members hold Francis Bacon's 'Landscape near Malabata, Tan...

Christie's staff member looks at Rene Magritte's ''L'évidence éternelle: ...

Christie's staff member looks at Rene Magritte's ''La magie noire,'' estima...

Christie's staff member looks at Rene Magritte's ''La magie noire,'' estima...

Christie's staff members hold Rene Magritte's ''Le principe d'Archimède,''...

Christie's staff member looks at Rene Magritte's ''Le paysage de Baucis,'' ...

Christie's staff member looks at Rene Magritte's ''La race blanche,'' estim...

Christie's staff member looks at Rene Magritte's ''La race blanche,'' estim...

Christie's staff members hold Rene Magritte's 'L'ami intime' ('The Intimate...

Christie's staff members hold Rene Magritte's 'L'ami intime' ('The Intimate...

Christie's staff members hold David Hockney's 'California' from 1965, estim...

Christie's staff members hold Claude Monet's 'Matinée sur la Seine, temps ...

Christie's staff member looks at Claude Monet's ''Matinée sur la Seine, te...