This is an authentic Japanese Kama and Furo set used for tea ceremony from late 1900s. The set comes in an original signed wooden box.
Kama are made of cast iron, and are used to heat the water used to make tea. This Kama is called Kimen Kama. In the tea room, the kama is either heated over a portable brazier, Furo or in a sunken hearth ,Ro built into the floor of the tea room, depending on the season. Furo made of bronze is the one below to boil water.