Fake or Fortune?: Gainsborough

SINOSSI

The focus turns to Britain's public art collections, in which 17,000 paintings are listed as `artist unknown'. From these Philip Mould and his research director Bendor Grosvenor identify several works they believe are by Thomas Gainsborough. They choose two paintings, the first being an 18th-century portrait of St Albans mayor Joseph Gape that Bendor thinks dates back to the artist's days as a high-society portrait painter - although he'll need to convince the world's leading Gainsborough expert. Philip's choice is a rare landscape, painted when the artist was experimenting with dreamlike scenes. But why is conservationist Aviva Burnstock troubled by a distinctive blue pigment? Last in the series.