This platter measures 15" x 18". It is an unusual light blue. Even more unusual is the border with its tiny pattern. The center design is a variant of the Traditional Blue Willow design. The edge scalloped in a Chippendale style. This platter is English 19th century. I believe this is Mandarin Blue by Copeland Spode. There is a small impressed round mark. There are no chips or cracks. There is crazing and light staining.