YAMAHA Yamaha YCR-631 Cornet I purchased this here. Red brass bell. Despite being a long model, the bell's base is curved like a short model. I believe it's an M bore. As you can see, the condition is not good. The lacquer is significantly peeled. There are also several dents. The previous owner said they had it maintained, and the pistons function without issue, but the 3rd slide is stuck. The case is in pretty rough shape inside. I will cover it with bubble wrap, etc., when shipping. Because of these factors, I'm listing it for a slightly lower price than when I bought it. It's used. Please refrain from purchasing if you are overly concerned about condition. Please review the above details and images before purchasing.