Thank you for viewing. This is an Okiro (portable hearth) set for tea ceremony utensils. Sencha tea utensils, irori (sunken hearth), tea ceremony, copper, metalwork. Size: Approximately 36.5 x 36.5 cm, Height: Approximately 19 cm. The inside of the ro-dan (hearth pit) is surrounded by copper plates. Perhaps due to ash? There is a color change in a triangular pattern, resembling the mountain range of Mount Fuji. It has not been used as a hearth.