By Jess Jones London-based Auction Technology Group (ATG) has recorded increased revenue due to higher appetite for art and antiques. In the first half of the year, the online auction marketplace recorded total revenue of $86m (£69m), up six per cent year-on-year and up one per cent on an organic basis. It said this growth was due to a 17 per cent rise in revenue from art and antiques, as well as a strong performance from its recent acquisition of Estatesales.net (ESN), a US estate sales listing site. In February 2023, ATG bought the ESN platform which both corporate estate sale companies and …