Auction house is contributing towards the artist’s production costs

New book explores some of the myths of the international trade

Neil Stokoe, R.B Kitaj and David Hockney were in the same year

Book tells of Nadia Plesner’s three-year battle to clear her name after luxury fashion company took offence at her drawing of a designer bag

Museo Reina Sofia acknowledges eye-watering figure in press statement

Only works produced in artist’s lifetime will be included

Museums and the trade want to put an end to the Catch-22 situation with Medici and Becchina

Changing tastes, as much as changing economic conditions, could bring a halt to the seemingly inexorable rise at the top end of the market

Bruun Rasmussen, Copenhagen, Jørn Utzon Collection, 9-11 June

Collection of politically inspired works by artists from the Congo on the market

Luxury boutiques are chasing out the galleries from their Paris addresses

Doyle, New York, Belle Epoque: 19th- and 20th-century Decorative Arts, 3 June

Increasing pressure to grow is pushing mid-tier galleries to find new ways to remain competitive

This year’s edition offers a more logical layout and a green Messeplatz project

Van Ham, Cologne, Asian Art, 6 June