Vintage Japanese Arrow Stone Ceramic Porcelain Tea Cup & Saucer 690 Navajo Blue

This is a vintage tea cup and saucer made by Arrow Stone Kasuka Japan. It is made of ceramic and porcelain. There is a maker's stamp on the bottom of both the cup and saucer. It is labled as 690 Navajo Blue . 

This tea cup measures 3" in diameter by 3 1/4" tall (8 x 8.25 cm). The saucer is 6 1/2" in diameter by 1" tall (16.5 x 2.5 cm). With exception to minor sign of past use, it remains infine condition.