Now authenticated by the leading authority on do Amaral, the work’s price has gone up 275%

A leading Brazilian auctioneer claims that the painting, which was offered for $3.2m in a private viewing during the fair, is a forgery

The works, including pieces by Do Amaral, Di Cavalcanti and others, were seized from the home of a man involved a bizarre scheme to swindle the widow of a famed dealer

The Museum of Contemporary Art at the University of São Paulo claims it is owed $3.6m for conserving and storing around 1,600 works repossessed from bankrupt Banco Santos president Edemar Cid Ferreira

A retrospective devoted to the Brazilian Modernist was part of a yearlong focus on female artists

Our pick of the latest gifts and purchases to enter museum collections worldwide, from Van Dyck’s portrait of a princess bride to a rare painting by a Brazilian Modernist

Recent appreciation of artist challenges 'illusion that we have come to terms with variety of Modern art'