This is a Yamaha student model, recommended for beginners. It features an E mechanism, making the third-octave E easier to play, allowing for enjoyable playing. Overall, it's in relatively good condition, but after disassembly and re-adjustment, the left thumb key post is attached in reverse (repair mark). Also, the head joint does not have the Yamaha mark engraved on it (it has a triangular mark on the underside, suggesting it's a Nikkan-made head joint). The case is also not the original (with a stain on the lower right side of the surface?). For this listing, it has been completely disassembled, with all pads and felts replaced, and re-adjusted. Although the key post and head joint have different specifications, there are no problems, and there are no issues with sound production. You can use it immediately. ◎ We welcome your price requests and inquiries in the comments. ◎ Due to the different specifications of the key post and head joint, we are offering it at a reduced price.