Stomvi COMBI This is a Stomvi COMBI trumpet. It has gold plating (GP) and comes with a sterling silver interchangeable bell. The GP bell produces a brilliant and dazzling tone, while the SP bell provides a calm and deep tone. I used them separately depending on the situation. Both the pistons and slides operate smoothly without sticking. The 3rd slide stopper does not have a screw, so I am using a Yamaha rubber stopper. There is some slight plating wear due to age and use. There are minor scratches and dents, but they do not affect the performance. It will be shipped in a double case. Please understand that this is a used item before purchasing. Thank you for your consideration. 〜〜〜〜〜〜〜〜〜〜 stomvi combi bach back yamaha yamaha