Antiques series. Paul Martin is joined by experts James Lewis and Christina Trevanion at the historic Imperial War Museum Duxford in Cambridgeshire. Together, the team pick out a selection of antiques and collectibles to be sold at an auction. Among the highlights, Christina hears how an unusual art nouveau Liberty opera coat was miraculously saved from a bonfire, and James unearths a painting by a very famous British artist - or does he? Paul has a look at the museum's conservation department, whose team are currently conserving one of the larger exhibits in the American Hangar, the iconic B-17 Flying Fortress.