Sotheby’s London sold Portrait on a White Cover (2002-03) for £22.5m at its Evening Sale of Contemporary Art last night (26 June). It was the highest price ever paid for a Lucian Freud work on British soil, beating the artist’s previous record of £16.1m set by Pregnant Girl (1961) at Sotheby’s in February 2016. A late masterpiece, Portrait on a White Cover—painted when the artist was 80 years old—represents the culmination of Lucian Freud’s lifelong...