A sale of film memorabilia, furnishings and paintings owned by Sir Richard Attenborough took place at Bonhams last week. Although the actor sold some of his best pictures by Lowry, Graham Sutherland and Christopher Nevinson in a £4.6 million auction at Sotheby’s in 2009, before he died, the Bonhams sale had more lots at more affordable prices. Some of them went way over their estimates. A poster for Charlie Chaplin’s 1918 film, A Dog’s Life, was estimated at £10,000 and sold for £32,500. A record amongst the artworks was achieved when a coloured caricature by Sir Max Beerbohm of Oscar Wilde looking uncannily like Stephen Fry raced past its £5,000 estimate to sell for £21,500.

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A new art centre in rural Somerset appears to have tipped the balance when the jury came out to decide who were the most powerful people in the international art world. In the past, the vote has gone to such household names as Sir Nicholas Serota or Larry Gagosian, but this year, Art Review’s Power 100 list is topped by Swiss couple, Iwan Wirth and Manuela Hauser, whose gallery, Hauser & Wirth, operates from New York, London, Zurich, a 200-acre farm in Somerset, and a 100,000 square foot space in Los Angeles to open next year – all of which combined gives them more operating space than any other gallery in the world including Gagosian.

The jury was particularly impressed with the educational role the gallery plays in Somerset, where the couple’s children go to school. The news was announced just as FIAC, the contemporary art fair in Paris was opening last week. As if to hammer home the point, Hauser & Wirth was the first gallery there to make a major sale at the opening – a €200,000 mannequin sculpture by Isa Genzken which addresses issues of free speech and was selected to show solidarity with the French in the wake of the terrorist attacks on satirical magazine Charlie Hebdo.

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Anyone wanting signed vintage photographs of the Beatles, David Beckham or Mohammad Ali by Harry Goodwin, who died two years ago, won’t have to break the bank. Thousands of prints from his archive are going on sale atEwbank’s Auctions in Surrey on Friday, many for as little as £100 or less, as they are to be sold without reserve prices. Goodwin is best known as the official photographer for the BBC’s Top of the Pops program from 1964 to 1973. In 2010, the Victoria & Albert Museum held a retrospective exhibition of his work, and he subsequently donated part of his archive to the University of Salford. Proceeds from the Ewbank’s sale will go to the Manchester cancer centre, The Christie.

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The illustrator Pauline Baynes, who died in 2008, is perhaps best known for her work with JRR Tolkien and CS Lewis, and now some fascinating material from her archive has surfaced at Blackwell’s bookshop in Oxford. Her annotated map of Middle-earth is priced at £60,000, while several of her original drawings for Lewis’s Prince Caspian are priced from £5,000 to £15,000.