The item is as shown in the images. A professional acquaintance tried it out and confirmed there are no issues with the performance. There is no sticking of the pistons. This is a high-end YAMAHA Xeno series model. It appears to be an early model, reportedly made with the famous Bach brand as a model. It has two braces, allowing for a considerable volume of sound. It is said to be rarely available. No claims, no returns. Thank you for your interest.