Antique Signed Japanese Cast Iron Teapot Tea Kettle Tetsubin

Here for sale is an antique tetsubin tea pot. Measures approximately 9"x7". I know nothing about thesse so please look carefully at the pictures before bidding. This would need to be restored before use as there is a lot of rust and corrosion on the inside. The tea pot is signed however I have not done any research to identify the maker. I also have another tetsubin for sale if you look at my other auctions.