Diameter: 6.5 Height: 10 It is unknown how old it is. It's also a mystery that the names of historical figures like Shibata Rensaburo and Ikemi Shohtaro are associated with Sengoku warlords. I've researched it extensively, but I have no idea what its purpose was. (・・?) There are no signs of use, but there are some missing parts that appear to be due to deterioration. It is safe to use as it is not sharp enough to cause injury. I think it has quite a dignified presence. (≧∀≦) I hope you will enjoy your tea with a solemn feeling.