These plates are 10.5" diameter. Each has a purple floral pattern and platinum band. They have a gold, stencilled backstamp which says Century Service Corporation Semi Vitreous Dinnerware Alliance Ohio Anniversary. The platinum bands are very worn and there are many utensil scratches on each. The patterns are also scratched. As you can see in the pictures, there are chips on the rims as well. These have been in my kitchen cabinet for many years, but I don't remember where I got them from.