This is an Aritsugu Deba knife. Blade length is approximately 15.5cm. It is a single-edged knife. The steel type is unknown. It has the "仁" (Jin) stamp. This Aritsugu Deba knife is easy to use due to its size. It had sharpening scratches and rust, which have been repaired and polished to a mirror finish, leaving some minor scratches. If you don't mind, I recommend it. The flat and cutting edge have been polished, making them shiny. The back side also has a clean edge, and the knife is generally in good condition, so it should last a long time. Both the cutting edge and the flat are almost mirror-finished. Recommended for professionals and general users due to its size. It has been finished with a Kitayama 8000 grit stone, a Shapton 12000 grit stone, and a natural whetstone. It is in a very sharp condition and can be used immediately. ● Size: Blade length approx. 155mm ● Blade thickness: Approx. 6.4mm at the thickest point ● Overall length: 285mm ● Weight: 228g #knife #DebaKnife #Aritsugu #15.5cm