The Yorkshireman's 1970s Californian scene, Portrait of an Artist, sold on the nose at $80m at Christie's in New York last night

Broadening the sales strategy for Latin American art has been a positive move for some artists' markets

Dr Frederick Banting wanted to take up art full-time, but he was killed in a plane crash during the Second World War

With only two lots unsold, the auction house nets $362.6m in evening of avid bidding

A double pool portrait, estimated at $80m and offered at Christie’s with no reserve, could set a record for the most expensive work by a living artist

At $317.8m, the Ebsworth evening sale becomes one of the top five most valuable collections ever sold at auction

Nineteen of the accused in Operation Demetra face trial in December, while the alleged UK mastermind awaits extradition

Monet carries Christie's evening sale while a Magritte shines at Sotheby's, marking an auction record for the Surrealist painter

Contemporary fair has reinvented itself after scaling back and moving to a November slot, although it has lost some big name exhibitors

It may be known as a haven, but buyers in the grand duchy pay 17% tax, fair director says

Two works supposedly owned by bankrupt company, whose director Matthew Green resigned in February following FBI sting operation, are "apparently" in Dubai

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

Third-party auction deals have made some people very rich—but they may be bad for the market in the long run

Guarantees can be lucrative, but in the face of savvy competition, novices can get burnt when backing works as a third-party

New York auction topped by Monet's Le bassin aux nymphaés, sold to an Asian buyer at $31.8m

The “snake jug” shattered the previous record for Anna Pottery, a niche favourite of Americana collectors

Lesser known lots still hold plenty of hammer potential

Prices for photography tend to be lower than standard art market price ranges but Richard Avedon’s famous Warhol image has a seven-figure price tag

The formal investigation follows his detainment earlier this week related to an ongoing spat with the art dealer Yves Bouvier

Chicago’s aborted effort to sell Kerry James Marshall’s public work teaches us something about the transactional nature of today’s culture

The judgement comes after two experts found the painting was made with modern synthetic pigments

Galleries are also seemingly undeterred by tussles between Presidents Trump and Xi Jinping

It's not just about money—credibility is a factor too

Despite censorship, China’s appetite for photography is growing but Paris Photo remains pre-eminent

Move brings Dutch and New York art fairs in line with each other

Galleries in New York and Los Angeles make the most of their cultural and financial capital

Knowledge and Wonder was estimated to sell for more than $10m, but Chicago’s mayor had a change of heart

The 31 October sale has prompted calls for repatriation and criticism of the seller, highlighting the gap between art ethics and law

MCH Group is selling its stakes in Art Düsseldorf and India Art Fair and will pull out of Singapore’s Art SG to 'to stabilise the company '

Feminine power and the occult permeate the Italian event and the city beyond