This product is a bamboo kena purchased in Bolivia, South America. Although there is no brand name or engraving, it is an instrument of the same quality as famous brand products sold locally. It is a new, unused item, but due to being a handmade product using natural bamboo material, there may be color unevenness, small scratches, and individual differences unique to the material. Also, there may be natural color variations inside the tube, but this is characteristic of bamboo material and is not a defect or stain. It is recommended for a wide range of people, from beginners who want to start playing folk music, to those who want to enjoy playing. *Please refrain from purchasing if you are looking for a perfect condition like an industrial product. It is suitable for those who understand the characteristics of South American-made, natural material instruments. Please feel free to comment if you have any questions or would like additional photos.