A pair of art deco jadeite, diamond and enamel cufflinks, by Cartier. Photo: Christie's Images Ltd 2010

Each circular link designed as a jade coin with Chinese characters, reading wu zhu, 'wu' meaning five and 'zhu' being a small monetary unit, to the white enamel border with single-cut diamond detail, circa 1925, in later Cartier case. Each signed Cartier NY, no. 1199 (2) - Estimate £2,500 - £3,500 Price Realized £8,125

Christie's. Jewels - The London Sale. 9 June 2010. London, King Street www.christies.com