YAMAHA YEP-201M Yamaha Marching Euphonium Manufacturing year unknown This item was received from a relative. I do not have specialized knowledge, so I cannot answer technical questions. The case is only for shipping purposes, so please consider it as an extra. This is a junk item, so 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 make sure you are satisfied before purchasing. No claims accepted. Returns and refunds are not accepted due to the item being junk. Only those who agree to the above conditions, please bid. Thank you very much.