This is a Nambu Tekki (cast iron) teapot. It has a beautiful traditional Arare (hailstone) pattern and a solid, weighty feel. • Regarding the inscription (signature): There appears to be a written inscription on the underside of the lid, possibly "Kurosawa." AI analysis suggests this could be the pseudonym "Kurosawa" of Kazuo Sasaki (the third generation Kunzan) of the Kunzan Kobo in Morioka. However, as we are not experts, please judge the accuracy of the brushwork and authenticity based on the images provided. • Condition: This is a used item. There is some rust and signs of use on the underside of the lid, inside, and spout, but we believe this is within the range that can be enjoyed as the characteristic flavor of cast ironware. Please check the images for details. • Size: Height 7.5 cm, Width 12.5 cm, Diameter 6.2 cm (Please excuse any errors due to amateur measurements) • Weight: 52.7g As this is an old item, we appreciate your understanding if you are familiar with vintage items and traditional crafts. Black iron kettle with a characteristic textured pattern, showing signs of use. Thank you for viewing.