I really like the 1st cup and saucer, and the second set apparently was not made for export either. Sorry, I don't know anything about them. I imagine there is a Japanese restaurant in your area. You might be able to get a free translation with a meal purchase.
They are called "Maruku china" If you type the word in you can search all kinds of pieces made by the company. I don't know if they are old or not but this will get you started