Japanese Partial Arare Hobnail Tetsubin by Nambu Kunzan, Holds 34 Ounces
It can be used over a flame, and has a coating on the inside and a fixed, non-moveable handle.
Since this is a kettle type tetsubin, it does not come with a stainless steel infuser basket.
Made by Nambu Kunzan in Morioka, Japan.
Click on picture to see detail.