10 bread & butter or cake plates, vintage Blue Willow pattern china

Set of ten vintage blue and white china bread and butter or dessert plates, in the Willow pattern, with oriental scene. These are unmarked, vintage USA china, we think... Royal China or Homer Laughlin? The plates measure 6 1/4" in diameter and are a beautiful dark cobalt blue color in white. All are in perfect condition, it doesn't look as though these have ever been used.