Seasoned. To prevent rust, apply a white limescale coating before use. This has been carefully cultivated using hard mineral water, so you can use it with confidence. There is some minor rust, but it is harmless. Purchased about a year ago. Used approximately 10 times. I took good care of it, but it became too much trouble to use, so I am selling it. A trivet is also included, making it a stylish addition to your kitchen. There is some minor rust, but it is harmless and not noticeable. Water boiled in an iron kettle releases iron, resulting in milder water. Coffee and tea will taste even better, and you can also supplement your iron intake. The box has been discarded, but the instruction manual is included. Purchased for 18,700 yen (Nanbu iron kettle) Purchased for 2,700 yen (Trivet) For those who understand that this is a used item. Recycled cardboard will be used for shipping. I will pack it carefully.