Freddie Mercury’s silver moustache comb has caught the imagination of the public and is a surprise hit of the series of sales at Sotheby’s in London and online due to get underway next week. Estimated at £400-£600 the current bid stands at £26,000. The London exhibition at Sotheby’s, Freddie Mercury, A World of his Own, has already drawn 40,000 visitors. It runs until September 5, the day before the live auctions begin.