A painting by Claude Monet, one of the Meules (Haystacks) series, depicting rural life near his home in the Normandy region, has set world records by selling for $110.7m (£85.7m). Shortly after, a sculpture by US pop artist Jeff Koons sold for $91.1m (£71m), breaking the record price for a work by a living artist. The Monet painting from 1890 was the first Impressionist work to achieve over $100m. It was last auctioned in 1986,...