Manufacturer: Kaertner Model Number: Unknown Key: Bb [Item Condition] Sound production has been confirmed, and there are no issues. The pistons are in good condition. All slides can be removed. Highly recommended for beginners. There are dents. [Included Items] Main unit Case Mouthpiece As shown in the images! Please ask any questions in the comments! Please understand that this is a used instrument, and refrain from purchasing if you are concerned about the details of its condition. Since this is a used instrument, we cannot provide a warranty. Thank you for your understanding!