Last of rare Benin ivories in private hands is expected to go on the market

Mixed results as contemporary art nosedives while earlier works avoid the worst

Collectors respond as prices drop to 2005-6 level

The current drop in activity may be healthy for the sustainability of the future art market

Defendant says auction house did not disclose its ownership of painting

"A number of interested individuals are looking to purchase the skull at its full price of $100m"

But Bacon brings profitable business to Christie’s and Sotheby’s

Médecins Sans Frontières will get millions from the sale

The London-based Russian billionaire has bought the record-breaking works; he has not previously been known to collect art

The ruling Al-Thanis bought the artist’s Lullaby Spring at Sotheby’s last year for £9.7m and are also believed to have purchased the Rockefeller Rothko for $72.8m

It was reassembled and sold after part of it was discovered in a pizzeria

The Estella collection will be sold in Hong Kong this month following exhibitions at leading institutions

Collaboration between the two spheres does not always benefit the market

Collectors seek top antiques in a market with a dwindling supply

Martin Creed installation opens 30th June

This account by the UK chairman of Sotheby’s is enthusiastic but superficial

Isabel Rawsthorne diptych on the block at Sotheby's

“Crude and brazen forgeries” of the artist's work are popping up in the market

Buyers were active in recent auctions and three new art funds have been started

Was the price forced up at Sotheby's sale?

This sales report demonstrates the intense interest in Russian late 19th-century classical paintings, early 20th-century modernist paintings, and Fabergé works

Globalisation, competition, and massive price increases are forces behind a new market

Baron Ullens is acquiring new works for his Beijing gallery

Historical works were popular

An unnamed East European collector bought several works at both Sotheby’s and Christie’s

Neither will the National Gallery’s Ambassadors which was judged too fragile to travel across London

But older decorative arts of the subcontinent fail to excite buyers

Oil-rich private collectors are dominating the salerooms and pushing aside dealers and investment funds

An anonymous Russian collector's investment in Dora Maar au Chat has lead several important works to enter the market