A 1930s painting by Piet Mondrian has sold for $51m (£43m) in a New York auction, a record for the artist's work. The piece was last sold in 1983 for $2.15m, which is equivalent to $6.4m (£5.4m ...

They are among the very most famous artworks left to us by the twentieth century: Piet Mondrian’s geometric canvases, white backgrounds overlaid with spare, uneven black lines, set off by a few ...