Fully illustrated auction catalogs available at 20% off when pre-ordered before 1 February. Beginning Sunday 23 January, Bonham's Knightsbridge will host the London viewing of Eric Clapton's guitars and amplifiers. It is free to attend. The auction, which takes place in New York on 9 March, will raise funds to support the Crossroads Foundation. It will feature over 70 guitars and 70 amps that have helped create EC's legendary sound. Bonham's Knightsbridge is in Montpelier Street SW7 1HH.