What’s behind the new, more measurement approaches to programming at museums, art fairs and more? Plus, a chat about current tensions around culture in the Netherlands and a close look at one of the most famous depictions of a wintery landscape

Works by 118 artists, on show at Bonhams, will be sold in aid of the Cure3 initiative

The most valuable lot of the week is a record-breaking Magritte with a third-party guarantee, but the most talked-about is a conceptual still life by Maurizio Cattelan

The auction house is expected to relocate its New York operation to 57th Street by the end of 2025

Estimated at up to £50,000, a large-scale piece made of coal sacks will go on the block at Bonhams in October

Chabi Nouri, who previously led the watch and jewellery company Piaget, replaces Bruno Vinciguerra

His death was confirmed by Epiris, the private equity firm that owns the auction house

Sotheby’s is selling an alabaster piece while Bonhams’ early carving is made from ironstone

All of the proceeds from Walters’s art collection—along with her jewellery and home décor—will go toward charitable causes, according to her estate

The painting, which featured prominently in a recent Colescott retrospective, hammered slightly below its estimate

Bonhams is offering a Robert Colescott work in a single-lot sale, while Sotheby’s online fashion series includes Princess Diana’s famous black-sheep sweater

The painting's whereabouts were unknown for 80 years, but a Facebook post led to its rediscovery

"1919" is among Colescott’s most important works, according to Bonhams, and figured prominently in a recent touring retrospective

The 2004 work Congestion Charge has a high estimate of £1.8m in the 29 June auction

Buyers flocked to Lalanne’s famous sheep and helped ramp prices up past the auction house's estimates

Plus imposing heads by Giacometti

"The Leopard" star’s collection could bring in as much as €5m at Bonhams in Paris

Taken as a trophy from the bedside of the dead Tipu Sultan in 1799 by British troops, the sword’s high estimate was ₤2m

The Arkansas-based non-profit was founded by Walmart heiress Alice Walton

Dealers open new outposts and auction house activity intensifies around the growing fair

Epiris private equity group, which owns the auction house, has reportedly approached JP Morgan Chase & Co to advise on the deal

Fourth edition of Cure3 selling exhibition trials "a new format of charitable giving in the crypto world"

Chief executive says latest acquisition is part of his strategy to stay local while going global

After his record-shattering sale at Christies in May and the announcement of gallery representation, can Ernie Barnes hold on to the momentum?

The firm bags a second Scandinavian auction house as sector consolidation continues

Just two months after buying the Nordic firm Bukowskis, the private-equity-owned auction house is bolstering its presence across the Pond

As the Chinese art specialist steps back at Bonhams, he reflects on 50 years in the auction world as it went from provincial to global

The sale traces her intellectual development from a law student and avid reader to one of the most recognizable justices on the Supreme Court.

The private-equity-owned auction house's acquisition of the Swedish firm is a first move in its bid to extend its global network