This is a beautiful serving platter from the Greendawn product line by Johnson Brothers. It has an oval shape and a scalloped edge, measuring 12 inches across. The platter is made of fine porcelain.  It was manufactured in mid 20th century England and has a printed backstamp. Greendawn is a very pale, almost not there, green.  It's beautiful to me, but green (in every shade) is beautiful to me.