Antiques Roadshow expert Gordon Foster left one of his younger guests gobsmacked during tonight’s repeat episode revealing the estimated valuation of a gift she was supposed to give her grandmother. During the episode, Fiona Bruce and the experts saw items come to the tables which included a jewelled locket that was a gift from Queen Victoria, an ashtray that was designed by Picasso, a collection of nearly 1,000 keys, and a box of silver gambling tokens used for making debt demands. Alongside the abundance of treasures, Foster was met with a silver tortoise brought in by a young girl who had f…