Blue Willow China

The China pieces were given. The set is not complete. There's a large oval plate, 4 saucer plates, 2 small bowls, one plate, and 1 medium plate. So, 9 pieces altogether. The pictures are painted in blue with clear crackle glaze. They all say Japan on the back assuming that they were made in Japan. There are signs of the paint fading. I'm not sure when the China were produced.