Set of 2 brown cylindrical yunomi (teacups) - Color: Brown - Size: Set of 2, large and small - Bottom marking: Marked with "Kuni-zo" (国三) - Shape: Cylindrical A type of pottery unique to Sado, Mumyoi-yaki, made from iron oxide excavated from the Sado gold mine. After firing, it becomes extremely hard and produces a clear sound when tapped. These are vessels that "grow" with use, developing a luster over time. Thank you for looking.