A cast iron tetsubin (kettle), Japan, Meiji or Taishô period, 20.5 cm high 

A cast iron tetsubin (kettle), Japan, Meiji or Taishô period, 20.5 cm high 

The Tetsubin's cover is certainly a later addition.

Lots of rust especially on the inside and under the Tetsubin.

Under the Testubin a circular zone of 2 cm of diameter seems more fragile, certainly due to the rust.