JAPANESE KNIVES AND KNIFE SHARPENING
This is NOS (new old stock) Minamoto no Masakane hankotsu, there may be stains or rusting due to storage.
A Hankotsu is used for removing meat from bones, it works especially well with hanging cuts.
It is a mono steel knife made from SK, high carbon steel. Carbon steel knives are known for their sharpness, edge retention, and durability. They hold a sharp edge for a long time and are easy to sharpen and maintain. However, they require proper care to prevent rust and will “patina” after cutting highly acidic or alkaline foods.
This knife is made from carbon steel and will form rust if it is left wet after use.