Q: My 100-year old grandmother has had this platter for many years. She said it belonged to my grandfather's mother, who used to dry corn on this platter. Can you tell me a little about the platter and how old you think it might be?
A: Your dish is part of the Classical Antiquities series, registered by Clementson in 1849. Joseph Clementson founded a pottery in Hanley, Staffordshire, England, c.1839. It became Clementson Bros. in 1865 and was in business until 1916. The diamond-shaped English registry mark on your platter gives the clues to the age of the dish. The English registry mark (R in diamond) tells a lot about your piece. The "IV" indicates the type of material is ceramics, the "S" indicates the year (1849), the "W" the month (March), "13" is the day of the month, and "2" is the parcel number. Your dish was made March 13, 1849.