Nikkan YBB103 Tuba This is quite old. Please consider it as a junk item. I am a novice, so I don't know how to make a sound. Year of manufacture unknown. This was passed down to me from a relative. I have no specialized knowledge, so I cannot answer technical questions. The case is only for shipping purposes, so please consider it as an extra. Since this is a junk item, I do not offer any warranty. Please understand this before bidding. For those who can repair it, or collectors, how about it? Please look at the photos carefully and be satisfied before purchasing. No claims accepted. Returns and refunds are not possible due to the item being junk. Only those who agree to the above conditions, please proceed. Thank you very much.