Fragonard is £15.2m top-seller of London’s Old Master series
The vast collection of the late Dr Gustav Rau provided the top lot of London’s latest series of Old Master auctions as a portrait by Jean-Honoré Fragonard (1732-1806) took a record £15.2m at Bonhams.
The picture of the high-ranking French aristocrat and general François-Henri d'Harcourt was knocked …