A Blue-Glazed Cylindrical Vase, Cong, Qianlong seal mark and of the period. Bonhams Knightsbridge, London. Photo courtesy Bonhams

Asian Art in London 2013. 31 October - 9 November. Montpelier Street Knightsbridge London SW7 1HH. Telephone: +44 (0)20 7447 7447. Contact: james.hammond@bonhams.com - rosangela.assennato@bonhams.com. Website: http://www.bonhams.com/asian. Auction: Asian Art. Monday, 4 November:10.30. Catalogue available from 12 October