This is a Yamaha euphonium YEP621s. The current list price is 555,500 yen. I purchased it in October 2024. As I am meticulous, I purchased a completely new instrument through a made-to-order process directly from the Yamaha factory, even if it meant waiting 1-2 months, rather than taking a store-stocked item. Usage frequency has been about 4-5 times a month since February 2025. This instrument resonates richly from top to bottom. All slides and pistons move smoothly. The felts are also clean. I will sell it to someone who will cherish it. While there are individual differences, I believe this one is a great instrument, as it generally has stable intonation on most notes when tuned to B♭. I have maintained it with Buzz Clean. I have not used polishing agents such as silver polish, as they can thin the instrument's lacquer. A Yamaha 51L mouthpiece is included. I can also include a Yamaha 48S if needed. There are no cracks in the case handle. The instrument body has minor polishing scratches and dirt from maintenance, but there are no dents, and it is in very good condition as shown in the photos. However, please refrain from purchasing if you are looking for a perfect item, as it has been handled by a person. I will ship it after carefully packing it with air cushions. I will consider price reductions within a reasonable range, so please let me know in the comments section.