This antique plate has 8 notches around the perimeter and is 9'' in diameter .It is marked Tonquin China number 500. This plate is in very good condition for its age .It was acquired at Eberhardts antiques in Philadelphia and was dated to approximately the early to mid 19th century . It does have surface scratches but no surface chips or cracks . Please view the photos up close as they are part of the description. Thank you kindly for looking .