Sloth 1935, a Paula Rego lithograph - £2400 at Duke's.

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Sloth 1935, a 16¼ x 11½in (41 x 29cm) lithograph, was one of a number of monochrome works by the artist that were printed at The Curwen Studio and published by Marlborough Graphics.

Rego is best known for her figurative paintings but, in reference to printmaking, she said: “I turn to etching and lithography with a sense of exuberance and relief. In printmaking you can give your imagination full-range and see the results almost immediately. So one image triggers the idea for the next one and so on.”

Rego’s prints appear regularly on the market and range from a few hundred pounds up to a highpoint of £20,000. This example sold within its £2000-3000 estimate at £2400.

With works by artists such as Antony Gormley (b.1950) and Maggi Hambling (b.1945) making £10,000 and £8000 respectively, overall the September 23 sale raised approximately £100,000 for The Beehive Centre, a treatment and therapy centre in Poole.

No buyer’s premium was charged at the sale.