Nigel Havers welcomes four more sellers to the Bidding Room, where they try to sell items to five professional dealers who are on the lookout for interesting pieces, with help from expert Simon Bower. First in today is shop owner Lindsay from Sunderland. She has brought in a pair of unique mirrors: one is concave and the other convex. Next, Alistair is offering an unusual piece of meteorological gear. It is themed after the Sputnik space mission and includes a hygrometer as well as a barometer. The only downside is that it isn’t in current working order. So will that put off the dealers? Clare is the owner of a silver coin collection, all minted in 1981, including a sovereign and five-pound coin commemorating the wedding of Charles and Diana. Simon loves it and reckons it could be worth at least £1,500, but none of the dealers are regular traders in coins, a highly specialist market. Finally, an item that has the dealers bamboozled at first. Seller Lucinda reveals that it is an antique ice-shaver. Now they know what it is, will any of the dealers be prepared to bid on it? Today's dealers are Ian Humphries, James Gooch, Lucy Ryder Richardson, Moses Otunia and Tash Francis.