Thank you for viewing. This is a rare Seydel 4-hole harmonica. There were no similar products, but a 6-hole harmonica, likely from the following website, is currently out of stock and was an expensive new product priced around 100,000 yen. https://www.themusicstand.ca/products/seydel-concerto-star-6 The included accessory is a case. There are no noticeable scratches or stains. I apologize, but I am unfamiliar with musical instruments, so I have not confirmed the sound. I have only checked the appearance. If you have any other questions, I will answer them to the best of my ability. Please understand that this is a used item.