10 soup or cereal bowls, vintage Blue Willow pattern china

Set of ten vintage blue and white china bowls, in the Willow pattern, with oriental scene. These are unmarked, vintage USA china, we think... Royal China or Homer Laughlin? The bowls measure 5 5/8" 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.