Auctioneer Ben Rogers Jones said the posters were hard to put a value on ... Henry Fonda and John Wayne were used in Cardiff cinemas from 1936 to 1940. But two builders later stumbled upon them ...

The posters were used in cinemas in Cardiff between 1936 and 1940. The prints, which are up to 3m (10ft) tall, were turned into makeshift underlay after formerly being used in the New Theatre ...