Nice Warburton 6M trumpet mouthpiece top. In good condition. No damage to threads or rim. This is a great mouthpiece. It has a 0.640" cup diameter and a medium cup depth. "Medium depth with a modified "V" style shape. Our M cups outsell all other models as they lend themselves well to all playing situations from jazz to symphonic". (From Warburton web site.) Asking $45.00. Email me for pics at dlbdesign@rochester.rr.com