Auction introduction: Sotheby’s presents the autumn edition of Banksy, the biannual online auction dedicated to one of Britain’s most beloved artists, with a pre-sale exhibition at Sotheby’s New Bond Street. Open for bidding from 10–17 September, the auction surveys the mysterious artist’s most sought-after and emblematic screenprints. Highlights include iconic subjects, such as Girl with Balloon, alongside vibrant impressions of Choose Your Weapon and his Warholian Kate Moss.