Our picks from this week's fairs and auctions around the globe

Pair of portraits by Frans Hals expected to lead two-day sale of collection of Dutch entrepreneur, who was advised by the dealer Robert Noortman

Emirati fair says she will work alongside the artistic director in a move away from having a single leader

Brexit and Trump's trade war with China are affecting the mood of buyers

Art lovers tell us what they’ve bought and why

Francis Bacon's lighter depiction of George Dyer leads auction at £17.5m, with strong prices for Hurvin Anderson, Bridget Riley and Albert Oehlen

Profits from the sale will support new UK arts education programme in 2019

Art lovers tell us what they’ve bought and why

Work at Galerie Kamel Mennour is quite literally ground-breaking

Fair focuses on women but market still favours men

From Kerry James Marshall's all-new paintings in London to Zoe Leonard's decade-long photo series in Los Angeles, these are the commercial gallery shows to see

Our pick from this week's fairs and auctions

The success of Tefaf New York Spring this year marked a sea-change

Research by The Art Newspaper uncovers wide disparity in both fee structures and transparency

Our pick from this week's fairs and auctions

Event aims to become the Mediterranean’s premier art fair, against stiff competition

Our pick from this week's auctions and fairs

Freya Simms speaks ahead of the tenth Lapada Art & Antiques Fair in London

Our pick from this week's auctions and exhibitions

In September 2008, Damien Hirst sold £111m of art as Lehman Brothers collapsed, triggering a financial crisis. A decade on, what has changed?

$450.3m Leonardo da Vinci painting was due to be unveiled at museum in two weeks but its display has now been delayed

A further 6,000 items belonging to Ali Aboutaam of Phoenix Ancient Art are still held by authorities in Geneva

The female Italian Baroque artist's depiction of Lucretia is thought to have been in European collection since the 19th century

Just two paintings significantly damaged the auction house's bottom line in the second quarter

IADAA and CINOA argue that compromise amendments to contentious new cultural goods regulations are still too stringent and ill-defined

Karan Vafadari and Afarin Neyssari paid a bail of around $10m according to sources but still await appeal request

Tacca's Hercules is star of the bronzes, while Carracci's military portrait and Rembrandt's print find favour where Rubens's daughter flounders in £31.1m sale

No big hitters, but overall quality and new buyers from Asia and Latin America buoyed £42.6m auction, with £5.3m record for Canova set in day sale

Veteran Old Master dealer will join the auction house in New York at the end of the summer, months after selling his inventory there

Bronze and marble take centre stage during Old Masters sales week, although Dresden Mars returns home without going on the block at Sotheby's