A 1940 self-portrait by Frida Kahlo has sold for $54.7m and made auction history at Sotheby’s in New York.

NEW YORK: A 1940 self-portrait by famed Mexican artist Frida Kahlo of her asleep in a bed could make history Thursday when it goes on sale by Sotheby’s in New York. With an…

An auction in New York today is almost certain to make the celebrated artist a record-breaker. But, overshadowing what could be a $60m sale, are questions about works that have…