UK auctioneer says Pietro Psaier worked in The Factory and died in the 2004 tsunami; his body has never been found
Former Factory assistant claims he made the disputed work
The series will go on show at the Faurscho gallery in Beijing
Jason Beltrez claims it was a flea market find while Christie's is stuck in the middle
The New York organisation has disbursed more than $200m in cash grants and art donations since the artist's death in 1987
Movie producer Joe Simon-Whelan sues, believing his work is genuine
The Andy Warhol Foundation for the Visual Arts has awarded the museum $600,000
A source close to the Andy Warhol Authentication Board hints at a change of heart
Allegations circulate that curator Pontus Hultén created unauthorised replicas
Charges focus on former executive director of the New York Academy of Art
Each of the twelve motorists have been assigned a vehicle restored by Christie, their route incorporating a series of art fairs
The work is one of the “Death and Disaster” series which rarely come on the market
The deal could be worth around $1 billion
This is the first time a complete set of the series is on offer
Denying the artist’s homosexuality makes his work more saleable, she says
Esther Robinson’s engrossing movie includes footage of several of Williams’ films
How the money men have changed the market
Financial buyers have had a dramatic impact on the way the art market works
Alan Yentob shines a revealing light on the secretive world of the Warhol Authentication Board
The Warhol Foundation adds curatorial experts to attempt to ease the controversy surrounding its authentication board
Ms Lindholm has been attempting to regain Warhol's Red Elvis since 2000
The decision ends a dispute that started in 2000
The Alcoa Corporation is marking its entry into Russia by funding the tour of a Warhol Museum show
The gift increases the museum’s endowment to $7.1 million
The panel has agreed to reveal, on a case-by-case basis, why it rejects works, but the process is still far from transparent
Corbis already represents the archives of Christie’s, Reuters, Condé Nast, and the Ansel Adams Trust
The board acknowledges that the artist “employed assistants”, but says that he “carefully supervised them”
The panel has attracted controversy for refusing to authenticate works attributed by their owners to Warhol
Jablonka is running concurrent shows on two giants of the 20th century