Antique China (Japan) unknown Design

These pieces have only Japan written on the bottom. I cannot find any makers markings or any other markings period. I have a complete tea set with exception of the teapot. The design is unknown to me and seems to be a woman and angel dancing around the cup pieces but not on the plates. They are pretty worn and seem to be very old. They have had gold painted rims and I cannot tell but other parts may have been painted blue at one time. They are in excellent condition besides the worn paint. They have no chips or cracks. I would really like to know more about them and about how much they would be worth.