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

Collectors, dealers and auction houses are unaware that much Depression-era art remains the property of the state

“Preposterous plan to create additional sculptures,” says rival PaceWildenstein

The British collector Frank Cohen reviews a guide to the intricacies of buying new art

Trends in real estate and the prestige factor have influenced recent preferences in the private market for sculptural works

Roberto Polo, once the toast of Paris, returns in style

Up to 1,000 forged works are circulating on the market, says expert

The artist's portrait of Picasso is now part of a Moscow private collection

Their first exhibition there will show Picabia's nudes

But older decorative arts of the subcontinent fail to excite buyers

The painting will go to the Neue Galerie

Sales in Dubai almost doubled expectations, and the majority of buyers were new (just don’t mention the Tel Aviv saleroom)

Galleries across the world are featuring growing numbers of pieces by American artists

Business is brisk but while the fair’s change of location allowed much needed expansion it leaves collectors hot and bothered

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

In the second extract from Adam Lindemann’s Collecting Contemporary, we learn that the most committed collectors also make the most money

The German artist’s work has become a favourite among curators and collectors—but only since his death a decade ago

Trends from the fair's first day indicate the importance of the European market

Exhibitor numbers are up 50%, with a few big names such as Hauser & Wirth

More bogus paintings are still out there, says LAPD

The British Museum, Christie’s, the National Art Collections Fund and the Inland Revenue, among others, were all fooled

Sotheby’s and Christie’s did well but concerns are growing about the scarcity of top end buyers

Many are major art collectors and philanthropists

Dealers race to sell stock at auction as buying tastes change

Other pieces, including a new version of the shark in a tank, have sold to Korea and the US

Tretyakov curator speaks out and admits being taken in by forgers

Five satellite fairs keep up the pace

Alan Yentob shines a revealing light on the secretive world of the Warhol Authentication Board

Property developer spends almost £100,000