Record-breaking Mondrian leads an evening of mixed results at Sotheby’s marquee Modern art sales in New York

The auction house held a competitive, white-glove single-owner sale and a lacklustre modern art sale on Monday night

The Art Newspaper - International art news and events
Microsoft co-founder Paul Allen's collection brings record-smashing $1.5bn at Christie's evening sale in New York

A $149.2m Seurat studio scene and $137.7m Cézanne landscape led the 60-lot, white glove sale

The Art Newspaper - International art news and events