Q: I have a 20 piece china teaset of very pretty pattern. There is a mark on its base which includes the name Gladstone China. Is it worth anything?

Mrs C

A. The Gladstone Pottery in Stoke-on-Trent dates back to the 19th century, but the firm closed in 1970 and the old factory is now a museum. The set you describe was made between 1961 and 1970 according to the mark, so it is comparatively recent in terms of the firm's history. This is not an especially collected brand, and value would be modest, around £20-£30 the set.