This bass trombone has just been serviced and is ready for a new owner. This is a dependent valve system. Everything works pretty well. It should be noted that the inner slides have significant wear and were adjusted as much as possible, but they aren’t as smooth as we’d like them to be. You might consider replacing the inner slides for best playing results. There are signs of previous repair on the horn and it isn’t cosmetically perfect, but it does have a great beefy sound. Comes with a case but no mouthpiece.