Authentication
Modigliani catalogue raisonné still years away
Competing claims and potential conflicts of interests delay publication, originally scheduled for 2006
2009 Calder case: A court of law is no place to authenticate art
The case set a legal precedent about the legal duty of authenticating bodies
Controversial Bacon drawings displayed in London
The works were set to be displayed at a now cancelled authentication debate
Dealer uses intimidation tactics at Parisian Giacometti foundation in mission to recover forged lamps
Policy decrees that works determined to be fake must be handed over to the authorities so that they cannot re-enter the market
Courtauld's Bacon debate on disputed drawings axed
Cristiano Lovatelli Ravarino's collection of drawings has been a hot topic in the art world
The problem with authenticating Warhol
While some fear the negative effects of the closure of the vetting board, others say its role was not essential
Pushkin accused of displaying a fake
Growing concerns over authenticity of Modigliani portrait on show in Moscow museum
Case against Warhol Foundation withdrawn
Joe Simon-Whelan spent three years trying to prove authenticity of a painting depicting the artist himself
Joe Simon-Whelan's Warhol authenticity claim over
Simon-Whelan says he lacks the financial resources to pursue his case
Warhol Brillo boxes downgraded to “copies”
Authentication board says famous museum director “falsified” their history
Courts cannot dictate authentication board’s decisions, case concerning Calder works finds
Judge says he does not have power over Calder Foundation
New evidence uncovered in Warhol Foundation lawsuit
Collector says a signed work from the same series confirms his work is genuine
Gallery raid sparks panic over supposed fakes of late artist d’Arcy Doyle
Artist’s widow in marathon authentication exercise
Immendorff: copies, fakes or authorised reproductions?
Michael Werner, his dealer for 30 years, says “everything was out of control” before the artist died
Artist John Chamberlain can be sued over disputed Warhol, says Judge
Former Factory assistant claims he made the disputed work
Rauschenberg gallery to continue lawsuit after artist’s death
Case seeks to punish defendant for selling works found in trash
Authentication committee refused to give an opinion on my Basquiat, says collector
Complaint says work could lose $3m in value as a result
Warhol board faces threat of class action
Movie producer Joe Simon-Whelan sues, believing his work is genuine
“Fake” Picasso is warning to make deals formal
Court to rule on payment “held in trust”
Trial Warhol prints may be authenticated in alleged policy adjustment for Authentication Board
A source close to the Andy Warhol Authentication Board hints at a change of heart
Warhol Brillo boxes could be fake
Allegations circulate that curator Pontus Hultén created unauthorised replicas
The Russian Culture Ministry has ruled that museums can no longer authenticate works of art for dealers and commercial galleries.
Culture ministry responds to fakes certified by leading institutions
New documentary challenging the gatekeepers of Warhol’s legacy
Alan Yentob shines a revealing light on the secretive world of the Warhol Authentication Board
Capa relative claims war photos held by the French government
The works depict the 1930s Spanish Civil War
Art historians appointed to the Warhol Authentication Board to help judge attributions
The Warhol Foundation adds curatorial experts to attempt to ease the controversy surrounding its authentication board
Andy Warhol Authentication Board changes disclosure policy
The panel has agreed to reveal, on a case-by-case basis, why it rejects works, but the process is still far from transparent
1933-1948—the dangerous years: how Sotheby's check art for tainted provenance
A Sotheby’s lawyer describes the work of its provenance research team