This is a 13-string koto. It has a normal soundboard, sudatare carving, and few marks from fallen koto bridges on the soundboard. There are no cracks on the backboard or the edges. It is made of paulownia wood. The soundboard has a nice pattern, and the sound has a beautiful, classic koto resonance. Sound testing and inspection have been performed. Koto bridges and a bridge box or cat-foot bridges will be included. How about it for practicing at home for your koto music lessons?