It's the fourth leg of Margie Cooper and Tim Medhurst's jaunt about the country in a big blue 1970s camper van. This time, silver expert Margie and auctioneer Tim are off to the seaside, starting their trip from Blackpool.A rummage around the antiques shops of Lancashire uncovers a menagerie of treasures for Margie, as she buys a push-along donkey, a doggy nutcracker and a prancing leather horse. However, a trip to the fairground leaves Margie rather spooked as she rides the ghost train and hears the little-known story behind this much-loved attraction.Tim goes for an eclectic mix of goodies in the hope they'll sell for a profit at the Derbyshire auction, including a harvest jug, a pipe holder and gilt bar brooch. He also makes time away from the shops to learn about one of the fathers of British astronomy.