Another was bought by an unscrupulous dealer who added the signature of Walter Sickert.

FORBES: The Case Of The Art Forger Who Restored Dead Painters' Careers [Book Excerpt]

Pieces from Jeffrey Archer's art collection have also been up for auction, including works by Sickert, Monet, Renoir, Rodin and Warhol.

BBC: Margaret Thatcher Asprey handbag raises 'just' ?25,000

Most of the latter had come from London, drawn, as were Walter Sickert and James McNeill Whistler through several winters in the 1880s, by the vivid and naturalistic subject matter and the preternaturally clear light.

ECONOMIST: Surfing the galleries