The crowds flock to a valuation day in Cirencester, where Paul Martin and our team of experts are on the look out for antiques and collectables to send to auction. Expert Thomas Plant is fascinated by a charity shop find, and Michael Baggott can't believe his eyes when he examines a spectacular diamond-studded brooch. Paul visits a country house which hasn't been redecorated for 400 years, and that means its walls have a colourful history.