This is a set of iron sake bowls made by Kamashi Hatake Shunsai III.
Kamashi is a craftsman to made Tea pot or Chagama.
It features a neat heptagonal shape that fits comfortably in the hand.
It comes in a paulownia box.
Guinomi Size: 1.8 x 1.8 x 2.0 in (4.5 x 4.5 x 5.2 cm)
Katakuchi Size: 2.8 x 2.7 x 3.9 in (7.0 x 6.8 x 9.8 cm)