The Madonna and Child at National Museum Cardiff was believed to be a copy

Rediscovered painting, found in a French house clearance, is the first work by the 13th century Florentine artist to be sold at auction in living memory

We can also reveal that the $450m painting is described in the latest insurance documents as “attributed to” Leonardo rather than as a definitive autograph work

Painting of Lucretia has been in a private collection in Lyon for the past 40 years and is estimated to sell for over €600,000

Painting will be exhibited at Frieze Masters next month, after a "style of Botticelli" sleeper sold for over £6m at Zurich auction in June

Part of the Wellington Collection in London, the picture was originally believed to be by a minor north Italian artist

The painting, long the subject of an attribution dispute, is now at the centre of a legal conflict over ownership

Scientific evidence points to St Olaf College’s Portrait of Eva Mudocci being the real deal, but scholars of the artist’s work are reserving judgement

The Virgin and Laughing Child was recently re-attributed as the artist's “only surviving sculpture”

The painting, thought to be the second version of the Baroque artist’s Judith Beheading Holofernes will be auctioned this June with an estimate of £86m-£129m

Painting, which hung on the wall of a Suffolk church, will be sold at Tefaf this year

Marie-Paule Quix says work is by Giorgio Ceragioli not the symbolist Belgian painter

Italian scholar says terracotta statuette, currently attributed to Antonio Rossellino, is actually by the 15th-century master

Now the export ban has been lifted, the work may go on the market after restoration

The process of art attribution has come under attack, with forgery scandals rampant

After conservation effort, Museum of Fine Arts decides its hunch was correct

The work was one of 18 to have been placed under a court order following a financial dispute unrelated to the auction

Rediscovered portraits are due to travel to Louvre Abu Dhabi in early 2019

The Accademia Carrara in Bergamo has re-attributed the 15th-century work Resurrection of Christ

Icon’s first major intervention since 1931 brings back original colours

Leading scholar says gallery's own curators believed Madonna Litta to be by Boltraffio, a pupil of the master

Worcester Art Museum argues for reattribution of altarpiece panels by Verrocchio’s workshop

The art historian suggests that Velázquez's former slave may have painted two works in the show

Herrick Gallery is marketing two pastels and eight drawings said to be by the Irish-born artist

If it turns out to be real, it would be the biggest discovery of the artist’s work in almost 25 years

Madrid museum still allows The Haywain to be centrepiece of blockbuster show in artist’s home town

Temptation of St Anthony in the Nelson-Atkins Museum was believed to be by a pupil of the great Dutch artist

Work featured on BBC’s Fake or Fortune programme in 2011

Project to mark 500th anniversary of artist’s death upgrades Infernal Landscape to an authentic work