We also have stamps similar to Mishima ware, but they are not inlaid. There is a painted design in the center, resembling a plum blossom, and a mark on the back that appears to be the artist's. It is likely an old plate made by an artist, but I don't know the details. There is a small indentation on the edge, like a chip or a small stone pulled out of the clay. It may not be recommended for those who are concerned, but it is an affordable and pleasant piece. The size is about 21 centimeters in diameter and about 5 centimeters in height, just a little less.