Limna valued a painting by Conny Maier at a third of the ticket price

Plus, the rise of private museums and Renaissance portraits at the Rijksmuseum

Amir Soleymani, who has had his Nifty account and assets frozen, has accused the platform of changing its terms of sale

A luxuriant still-life painting of gladioli flowers should sell for over $10m

Attorney general claims the auction house created and used tax exemption certificates that falsely presented the buyer as an art dealer in order to dodge payments. Sotheby's says it will continue to contest the case

As a US court issues a decision on the dispute between the Andy Warhol Foundation and photographer Lynn Goldsmith, two lawyers explore past case studies in this legally controversial area

From Shenzhen to Shanghai, Hong Kong to Beijing, this autumn is awash with events despite border closures and long quarantines

US Treasury Department issues a call for input on forthcoming regulation that aims to counter money laundering

Exhibition of work from the Pre-Columbian age to mid-century Modern paintings, extended to 22 October

The institution has partnered with French start-up LaCollection to auction the non-fungible tokens, coinciding with its exhibition of the Japanese artist's work

The design fair has launched a new partnership in Doha

ArtOfficial, developed with help from Gary Vaynerchuk, "aims to broaden the experience of digital art" and make its purchase more accessible and transparent

Plus, Art Basel: are the buyers back? And Mary Beard on images of power

Despite the success of the fair's first post-pandemic edition, galleries are weighing up the future

Outside the Messeplatz, the Scandinavian duo have installed a car with a tender surprise inside

Gertrude aims to make the art market more accessible and evenly distributed

Founded by gallerists and lawyers, the venture will provide estate-planning advice—for a fee—to artists and their families

Ambassadors from eight countries—Mexico, Bolivia, Costa Rica, Colombia, Ecuador, Guatemala, Panama and Peru—whose heritage was included in the sale launched a united front against it, with calls for Unesco to intervene

Asian buyers are now the biggest spenders at international auctions and these digitally-native collectors are happy to splurge online

Art Basel has lent expertise to Art Week Tokyo, but does this indicate further involvement?

I've learned the new political lessons about art shipping the hard way—so you don't have to

The fair may be smaller than usual this year but Jennifer Roberts says she has never known the collectible design market to be in such rude health

The latest UBS Art Basel report finds that top jobs are finally going to women—even at the mega galleries

More than 70 works designated as national heritage are due to be sold in Munich on 21 September

Arranging the event amid a shifting pandemic has been fraught with risk—but it is a risk worth taking, says global director Marc Spiegler

Russian art collector had sued for double dealing and will now appeal decision, while Bouvier plans to launch $1bn countersuit for damages—and write a tell-all book

One of the few Black-owned galleries in London, the space will open with a show of Nirit Takele in October as the gallery takes part in Frieze London for the first time

Historically marginalised groups are being kept out of an industry that expects people to work for free in order to get a foot in the door

US dealer launches new space with giant Alexander Calder sculpture in the Place Vendôme