Name: Linda     Message: I have recently purchased a very old dish, that I think may be ironstone, and bears only a very faint impression on the back. Can you help identify it from the attached please?   blue-3.jpg blue1.jpg blue2.jpg At first glance it appears to be similar to the Davenport Marks such as this http://www.thepotteries.org/mark/d/davenport2.jpg  but the style and quality of the ceramics doesn’t gel. I have tried enhancing the details of the mark, but it is not very clear – it could be an Omega symbol But I think it is more likely that the mark is a letter G – in which case it is not a factory mark at all, but a size / pattern mark. As this is clearly a ceramic piece made from a mould and the mark is raised, so was incised or stamped into the mould before the liquid ceramic