Our pick of this week’s international auctions

The late critic was an expert in the auction house’s Old Masters department

Auction houses in Berlin, Cologne and Munich offer a restituted Menzel, Brücke artists and a Richter

Auction results were stellar 12 months ago, but sense and caution meant the houses had to work hard for more sober results this time round

Chair of Smithsonian’s National Museum of the American Indian calls on owners of disputed objects to return them

A nearly complete stegosaurus goes under the hammer at Auctionata’s fossils and minerals sale

Six-foot study depicting River Stour is estimated to sell for between £12m and £16m

Launch show will incorporate art highlights from November New York sales

Highlights going under the hammer in this week’s international auctions

Increase puts auction house’s fees in line with Sotheby’s; Christie’s a relative bargain

Highlights going under the hammer in London at Sotheby’s, Christie’s and Phillips

Femme Assise has been in private hands for the past 43 years

Auction specialist left her position as head of contemporary art at Sotheby’s last month

Works by Kahlo, Monet and Hepworth were high points of an otherwise average night

The internet auction houses have united to target the middle market and Millennial collectors

Auction exceeded expectations after disappointing results for Impressionist and Modern art on Monday

Auction house served up a ‘tight, curated and profitable’ sale after reducing reserves

Last night's Impressionist and Modern auction in New York had a 66% sell-through rate

Maurizio Cattelan’s Hitler statue breaks record, but sale overall comes in at lower end of pre-sale estimate

Unenthusiastic bidding was bolstered by heavy guarantees, but some works hit the mark

From Bacon’s double self-portrait to Monet's waterlilies, three highlights going under the hammer

Historic works by UK artists will anchor Defining British Art sale, while loan exhibition will bring key pieces back to public display

Insurance and security costs of keeping works are partly to blame for sale

Our pick of this week’s auctions, art fairs and gallery exhibitions

The auction follows the glut of next week’s New York sales