This platter measures 9 5/8" x 7 1/2". The flow blue design is Art Nouveau with water lilies and stylized leaves and vines. There are no marks and I have not been able to identify the pattern. However, it is circa 1900 English flow blue. It is in lovely condition except for a tight stable hairline. It displays well or it can be used. I will be listing other pieces of this pattern.