Ceramic - Japan - vintage

Vintage Japanese set; I don’t know the era, composed of a small teapot with 2 painted ceramic cups, depicting Japanese characters in gold, brown, red and other colors with reliefs, while the whole is white. Very elegant and distinctive set. The teapot measures 10 cm in height, 11 cm in width including the handle; the cups are 4 cm in height and 7 cm in width excluding the handle.