A no-brand 6-1/2AL-L mouthpiece is included. I purchased this as a spare, used. After acquiring it, I would blow air through it about once every two months to maintain its condition. I used the slide section only, about once a week for six months. It has a large-bore yellow brass bell, and the slide is nickel silver (cupronickel). The list price was 80,000 yen, and the actual selling price seems to be around 60,000 yen. It's very similar to a Bach 42B. I tried it with my Bach 42BO and found that the slides are compatible, but the main tuning slide is not (the sizes are slightly different). It seems like it was stored away without being used much. The exterior looks clean at first glance, but there is some lacquer peeling. The left side of the bell is the most noticeable. Also, part of the bell rim is rusty. The slide's support ring is missing. It was in the way for me, so it was convenient. The previous owner may have intentionally removed it. The ring itself is still present. The slide will fall under its own weight when tilted. There's a slight gritty feeling, but it should be fine with some slide cream. I used it combined with the bell section of a Bach 42BO for a while. Although it's a low-cost instrument and the build quality is somewhat lacking, it was quite easy to play. I'm a novice, so I can't make a proper judgment, but I think it can be used as is. I washed the case because it was dirty. I think it's much better now. I plan to wrap this case in bubble wrap for shipping. I will try to respond as quickly as possible, but it will take some time to pack, so I would appreciate it if you could wait up to a week for shipping.